Home > INT3 > Chapter 12 > Lesson 12.1.4 > Problem12-61

12-61.

Add or subtract and simplify each of the following expressions.

1. $\frac { 3 } { ( x - 4 ) ( x + 1 ) } + \frac { 6 } { x + 1 }$

Simplify the expression above by creating a common denominator.

$\text{Multiply the second fraction by }\frac{(x-4)}{(x-4)} \text{ to make the denominators the same.}$

1. $\frac { x + 2 } { x ^ { 2 } - 9 } - \frac { 1 } { x + 3 }$

Factor the denominator in the first term. What do you need to multiply the second fraction by to get a common denominator?