Algebra Examples

$8 + \frac{b}{- 4} = 5$

Step 1

Subtract $5$ from both sides of the equation.

$8 + \frac{b}{- 4} - 5 = 0$

Step 2

Simplify $8 + \frac{b}{- 4} - 5$ .

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Step 2.1

Move the negative in front of the fraction.

$8 - \frac{b}{4} - 5 = 0$

Step 2.2

Subtract $5$ from $8$ .

$- \frac{b}{4} + 3 = 0$

Step 3

Factor the left side.

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Step 3.1

To write $3$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$- \frac{b}{4} + 3 \cdot \frac{4}{4} = 0$

Step 3.2

Combine $3$ and $\frac{4}{4}$ .

$- \frac{b}{4} + \frac{3 \cdot 4}{4} = 0$

Step 3.3

Combine the numerators over the common denominator.

$\frac{- b + 3 \cdot 4}{4} = 0$

Step 3.4

Multiply $3$ by $4$ .

$\frac{- b + 12}{4} = 0$