Calculus Examples

$f (x) = 9 x$ , $f (x) = x$

Move all terms containing $x$ to the left side of the equation.

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Since $x$ contains the variable to solve for, move it to the left side of the equation by subtracting $x$ from both sides.

$9 x - x = 0$

Subtract $x$ from $9 x$ to get $8 x$ .

$8 x = 0$

Divide each term by $8$ and simplify.

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Divide each term in $8 x = 0$ by $8$ .

$\frac{8 x}{8} = \frac{0}{8}$

Reduce the expression by cancelling the common factors.

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Cancel the common factor.

$\frac{8 x}{8} = \frac{0}{8}$

Divide $x$ by $1$ to get $x$ .

$x = \frac{0}{8}$

Divide $0$ by $8$ to get $0$ .

$x = 0$

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