### Home > CC2MN > Chapter 7 > Lesson 7.2.7 > Problem 7-135

7-135.

For each equation below, solve for . Sometimes the easiest strategy is to use mental math.

Isolate the

variable.

What number do you need to divide both sides by to isolate the

variable?What is

divided by ?

Subtract

from both sides to isolate .

Notice that both sides are divided by

.