Mathway | Popular Problems

Popular Problems

Rank	Topic	Problem	Formatted Problem
4901	Solve by Substitution	x+y-z=1 , x+3z=-5 , 3y-z=5	$x + y - z = 1$ , $x + 3 z = - 5$ , $3 y - z = 5$
4902	Solve by Substitution	x+y-z=2 , 2x-y+z=-5 , x-4y+3z=-25	$x + y - z = 2$ , $2 x - y + z = - 5$ , $x - 4 y + 3 z = - 25$
4903	Solve by Substitution	x=0 , n=20 , p=0.08	$x = 0$ , $n = 20$ , $p = 0.08$
4904	Solve by Substitution	x=3y , x+3y=1	$x = 3 y$ , $x + 3 y = 1$
4905	Solve by Substitution	x=y+1 , x+2y=13	$x = y + 1$ , $x + 2 y = 13$
4906	Solve by Substitution	x=y-3 , 2x-y=7	$x = y - 3$ , $2 x - y = 7$
4907	Solve by Substitution	x-2y=14 , 4x+5y=-9	$x - 2 y = 14$ , $4 x + 5 y = - 9$
4908	Solve by Substitution	5x+3y=13 , 3x+5y=3	$5 x + 3 y = 13$ , $3 x + 5 y = 3$
4909	Solve by Substitution	5x+4y=180 , 6x+9b=300	$5 x + 4 y = 180$ , $6 x + 9 b = 300$
4910	Solve by Substitution	5x=2y+12 , 4x=28-3y	$5 x = 2 y + 12$ , $4 x = 28 - 3 y$
4911	Solve by Substitution	5x-2y=11 , 2x+5y=16	$5 x - 2 y = 11$ , $2 x + 5 y = 16$
4912	Solve by Substitution	5x-2y=-174 , 4x+10y=58	$5 x - 2 y = - 174$ , $4 x + 10 y = 58$
4913	Solve by Substitution	5x-2y=4 , 2x-3y=5	$5 x - 2 y = 4$ , $2 x - 3 y = 5$
4914	Solve by Substitution	5x-32=-y , 3x-y=0	$5 x - 32 = - y$ , $3 x - y = 0$
4915	Solve by Substitution	5x-4y=-4 , -x+5y=1	$5 x - 4 y = - 4$ , $- x + 5 y = 1$
4916	Solve by Substitution	6=3x+5y , 4=2x-5y	$6 = 3 x + 5 y$ , $4 = 2 x - 5 y$
4917	Solve by Substitution	6x+2y=-18 , 4x+y=-14	$6 x + 2 y = - 18$ , $4 x + y = - 14$
4918	Solve by Substitution	6x-2y=-8 , 3x+6y=24	$6 x - 2 y = - 8$ , $3 x + 6 y = 24$
4919	Solve by Substitution	6x-y=3 , x+2y=20	$6 x - y = 3$ , $x + 2 y = 20$
4920	Solve by Substitution	7x+2y=0 , 3x-y=0	$7 x + 2 y = 0$ , $3 x - y = 0$
4921	Solve by Substitution	7x+2y=-9 , -2x+3y+5=6	$7 x + 2 y = - 9$ , $- 2 x + 3 y + 5 = 6$
4922	Solve by Substitution	7x+4y=27 , x+y=3	$7 x + 4 y = 27$ , $x + y = 3$
4923	Solve by Substitution	7x+y=-1 , -14x+12y=2	$7 x + y = - 1$ , $- 14 x + 12 y = 2$
4924	Solve by Substitution	7x-15y=1 , -x-6y=8	$7 x - 15 y = 1$ , $- x - 6 y = 8$
4925	Solve by Substitution	-7x-2y=19 , 28x+36y=148 , 13x+18y=79	$- 7 x - 2 y = 19$ , $28 x + 36 y = 148$ , $13 x + 18 y = 79$
4926	Solve by Substitution	7x-3y+3z=5 , 7x+2y-z=12 , 35x-10y+11z=32	$7 x - 3 y + 3 z = 5$ , $7 x + 2 y - z = 12$ , $35 x - 10 y + 11 z = 32$
4927	Solve by Substitution	-7x-3y=21 , y=5x+15	$- 7 x - 3 y = 21$ , $y = 5 x + 15$
4928	Solve by Substitution	7x-6y=-5 , -14x+12y=10	$7 x - 6 y = - 5$ , $- 14 x + 12 y = 10$
4929	Solve by Substitution	8x+8y=0 , 7x+5y=2	$8 x + 8 y = 0$ , $7 x + 5 y = 2$
4930	Solve by Substitution	-8x-3y=18 , 22x+38y=248 , 15x+10y=10	$- 8 x - 3 y = 18$ , $22 x + 38 y = 248$ , $15 x + 10 y = 10$
4931	Solve by Substitution	8x-7y=-3 , -16x+14y=6	$8 x - 7 y = - 3$ , $- 16 x + 14 y = 6$
4932	Solve by Substitution	8x-y=17 , x+y=10	$8 x - y = 17$ , $x + y = 10$
4933	Solve by Substitution	8y-3x=-49 , x-9y=67	$8 y - 3 x = - 49$ , $x - 9 y = 67$
4934	Solve by Substitution	9r-s+t=9 , 3r+2s-3t=1 , r-3s+2t=-1	$9 r - s + t = 9$ , $3 r + 2 s - 3 t = 1$ , $r - 3 s + 2 t = - 1$
4935	Solve by Substitution	9x+3y=15 , 2x+4y=10 , x+3y=6	$9 x + 3 y = 15$ , $2 x + 4 y = 10$ , $x + 3 y = 6$
4936	Solve by Substitution	9x+4y=36 , 6x+5y=30	$9 x + 4 y = 36$ , $6 x + 5 y = 30$
4937	Solve by Substitution	9x+4y=36 , 6x+5y=30 , x+2y=10	$9 x + 4 y = 36$ , $6 x + 5 y = 30$ , $x + 2 y = 10$
4938	Solve by Substitution	9x-5y=22 , 5x+7y=22	$9 x - 5 y = 22$ , $5 x + 7 y = 22$
4939	Solve by Substitution	9x-9y=36 , 7y-3x=-14	$9 x - 9 y = 36$ , $7 y - 3 x = - 14$
4940	Solve by Substitution	A=42000 , p=60276 , r=4.25% , t=2	$A = 42000$ , $p = 60276$ , $r = 4.25 %$ , $t = 2$
4941	Solve by Substitution	ax+by=c , x+4(5)=7	$a x + b y = c$ , $x + 4 (5) = 7$
4942	Solve by Substitution	f=18 , p=20000 , r=0.08	$f = 18$ , $p = 20000$ , $r = 0.08$
4943	Solve by Substitution	3x-2y=-7 , 6x+5y=4	$3 x - 2 y = - 7$ , $6 x + 5 y = 4$
4944	Simplify	f(x)*(2x)/(1-x)	$f (x) \cdot \frac{2 x}{1 - x}$
4945	Solve by Substitution	3x-5y+6z=51 , 5x+4y-z=-7 , 8x+7y+2z=5	$3 x - 5 y + 6 z = 51$ , $5 x + 4 y - z = - 7$ , $8 x + 7 y + 2 z = 5$
4946	Solve by Substitution	3x-6y=5 , 4x-3y=5	$3 x - 6 y = 5$ , $4 x - 3 y = 5$
4947	Solve for x	2sin(2x)cos(2x)=2	$2 \sin (2 x) \cos (2 x) = 2$
4948	Solve by Substitution	3x-y=12 , 3x+3y=5 , 5x+2y=17	$3 x - y = 12$ , $3 x + 3 y = 5$ , $5 x + 2 y = 17$
4949	Solve by Substitution	3x-y=15 , x+5y=37	$3 x - y = 15$ , $x + 5 y = 37$
4950	Solve by Substitution	-3y-3x=-9 , y=-3x+7	$- 3 y - 3 x = - 9$ , $y = - 3 x + 7$
4951	Solve by Substitution	3y-x=2 , 6y=2x+4	$3 y - x = 2$ , $6 y = 2 x + 4$
4952	Solve by Substitution	4x^2+y^2=1 , x^2-3y^2=14	$4 x^{2} + y^{2} = 1$ , $x^{2} - 3 y^{2} = 14$
4953	Solve by Substitution	4x^2+y^2=9 , 2x^2-y^2=16	$4 x^{2} + y^{2} = 9$ , $2 x^{2} - y^{2} = 16$
4954	Solve by Substitution	40x+20y=2300 , 20x+5y=8000	$40 x + 20 y = 2300$ , $20 x + 5 y = 8000$
4955	Solve by Substitution	40x+20y=23000 , 20x+5y=800	$40 x + 20 y = 23000$ , $20 x + 5 y = 800$
4956	Solve by Substitution	4n+2p=56 , n+p=19	$4 n + 2 p = 56$ , $n + p = 19$
4957	Solve by Substitution	4x+12y=5 , -1x-3y=-2	$4 x + 12 y = 5$ , $- 1 x - 3 y = - 2$
4958	Solve by Substitution	4x+3y=10 , 3x+3y=12	$4 x + 3 y = 10$ , $3 x + 3 y = 12$
4959	Solve by Substitution	4x+3y=-10 , 5x-3y=-53	$4 x + 3 y = - 10$ , $5 x - 3 y = - 53$
4960	Solve by Substitution	4x+3y=15 , 12x+9y=45	$4 x + 3 y = 15$ , $12 x + 9 y = 45$
4961	Solve by Substitution	4x+3y=2 , 2x-y=1	$4 x + 3 y = 2$ , $2 x - y = 1$
4962	Solve by Substitution	4x+4y=-4 , 5x-5y=25	$4 x + 4 y = - 4$ , $5 x - 5 y = 25$
4963	Solve by Substitution	4x+4y-4z=24 , 2x-y+2=-9 , x-2y+3z=1	$4 x + 4 y - 4 z = 24$ , $2 x - y + 2 = - 9$ , $x - 2 y + 3 z = 1$
4964	Solve by Substitution	4x+7y=-12 , 11x+6y=20	$4 x + 7 y = - 12$ , $11 x + 6 y = 20$
4965	Solve by Substitution	4x+7y=60 , 10x+5y=70	$4 x + 7 y = 60$ , $10 x + 5 y = 70$
4966	Solve by Substitution	4x+y=15 , 2x+5y=21	$4 x + y = 15$ , $2 x + 5 y = 21$
4967	Solve by Substitution	4x+y=5 , -8x-2y=21	$4 x + y = 5$ , $- 8 x - 2 y = 21$
4968	Solve by Substitution	4x-3y=23 , 3x+5y=10	$4 x - 3 y = 23$ , $3 x + 5 y = 10$
4969	Solve by Substitution	4x-5y+z=7 , x+y=5	$4 x - 5 y + z = 7$ , $x + y = 5$
4970	Solve by Substitution	4x-72=72 , 5x-8y=-8	$4 x - 72 = 72$ , $5 x - 8 y = - 8$
4971	Solve by Substitution	-4x-9y=1 , -x+2y=-4	$- 4 x - 9 y = 1$ , $- x + 2 y = - 4$
4972	Solve by Substitution	-5r+2s+4t=8 , 4r+t=3 , t=3r-3s-3	$- 5 r + 2 s + 4 t = 8$ , $4 r + t = 3$ , $t = 3 r - 3 s - 3$
4973	Solve by Substitution	5x+2y=11 , 7x+6y=9	$5 x + 2 y = 11$ , $7 x + 6 y = 9$
4974	Solve by Substitution	5x+2y=-31 , -x+y=16	$5 x + 2 y = - 31$ , $- x + y = 16$
4975	Solve by Substitution	3x-2y=-3 , 8x-y=5	$3 x - 2 y = - 3$ , $8 x - y = 5$
4976	Solve by Substitution	3x-2y=5 , 4x-5y=2	$3 x - 2 y = 5$ , $4 x - 5 y = 2$
4977	Solve by Substitution	2x-7y=-3 , x+5y=7	$2 x - 7 y = - 3$ , $x + 5 y = 7$
4978	Solve by Substitution	2a-2y=2 , 8y+16Z=53 , a+2Z=6	$2 a - 2 y = 2$ , $8 y + 16 Z = 53$ , $a + 2 Z = 6$
4979	Solve by Substitution	2x-2y=-3 , x=2	$2 x - 2 y = - 3$ , $x = 2$
4980	Solve by Substitution	2x-3y=12 , 4x-6y=-24	$2 x - 3 y = 12$ , $4 x - 6 y = - 24$
4981	Solve by Substitution	2x-3y=2 , 5x+6y=5	$2 x - 3 y = 2$ , $5 x + 6 y = 5$
4982	Solve by Substitution	2x-3y-2z=6 , x+2y+3z=8 , 3x-y-2z=5	$2 x - 3 y - 2 z = 6$ , $x + 2 y + 3 z = 8$ , $3 x - y - 2 z = 5$
4983	Solve by Substitution	2x-5=y , -3x+4y=0	$2 x - 5 = y$ , $- 3 x + 4 y = 0$
4984	Solve by Substitution	2x-5y+3z=9 , 2x+4y-z=13 , 6x-6y+5z=31	$2 x - 5 y + 3 z = 9$ , $2 x + 4 y - z = 13$ , $6 x - 6 y + 5 z = 31$
4985	Solve by Substitution	2x-y=2 , x+5y=34	$2 x - y = 2$ , $x + 5 y = 34$
4986	Solve by Substitution	2y=x+3 , 5y=x-7	$2 y = x + 3$ , $5 y = x - 7$
4987	Solve by Substitution	3=5x-4y , -6=-10x+8y	$3 = 5 x - 4 y$ , $- 6 = - 10 x + 8 y$
4988	Solve by Substitution	35x+70y+175z+280=2625 , 40x+40y+80z+160=1320 , 40x+40y+90z+140=1410	$35 x + 70 y + 175 z + 280 = 2625$ , $40 x + 40 y + 80 z + 160 = 1320$ , $40 x + 40 y + 90 z + 140 = 1410$
4989	Solve by Substitution	3a+b=28 , a+3b=-12	$3 a + b = 28$ , $a + 3 b = - 12$
4990	Solve by Substitution	3x1+x2=63 , x1+x2=22 , x1+3x2=30	$3 x \cdot 1 + x \cdot 2 = 63$ , $x \cdot 1 + x \cdot 2 = 22$ , $x \cdot 1 + 3 x \cdot 2 = 30$
4991	Solve by Substitution	3x+12y=162 , 6x+2y=126	$3 x + 12 y = 162$ , $6 x + 2 y = 126$
4992	Solve by Substitution	3x+21y=-9 , x+7y=-3	$3 x + 21 y = - 9$ , $x + 7 y = - 3$
4993	Solve by Substitution	3x+2y=1 , -6x-4y=-2	$3 x + 2 y = 1$ , $- 6 x - 4 y = - 2$
4994	Solve by Substitution	3x+2y-z=2 , 4x+3y+z=4	$3 x + 2 y - z = 2$ , $4 x + 3 y + z = 4$
4995	Solve by Substitution	3x+32y=19 , 45x+17y=4	$3 x + 32 y = 19$ , $45 x + 17 y = 4$
4996	Solve by Substitution	-3x+5y=4 , 12x-20y=-16	$- 3 x + 5 y = 4$ , $12 x - 20 y = - 16$
4997	Solve by Substitution	3x+6y=-3 , 4x+9y=-2	$3 x + 6 y = - 3$ , $4 x + 9 y = - 2$
4998	Solve by Substitution	-3x+y+2z=-13 , -x-y+z=0 , 2x+2y-3z=-1	$- 3 x + y + 2 z = - 13$ , $- x - y + z = 0$ , $2 x + 2 y - 3 z = - 1$
4999	Solve by Substitution	3x+y=10 , 9x+3y=9	$3 x + y = 10$ , $9 x + 3 y = 9$
5000	Solve by Substitution	3x+y=2 , -7x-2y=-3	$3 x + y = 2$ , $- 7 x - 2 y = - 3$