Pre-Algebra Examples

$\frac{a - 1}{a b c^{3}} + \frac{3 - b}{a b c^{3}}$

Step 1

Combine the numerators over the common denominator.

$\frac{a - 1 + 3 - b}{c^{3} a b}$

Step 2

Add $- 1$ and $3$ .

$\frac{a + 2 - b}{c^{3} a b}$