The operation of canceling out common factors in both the numerator and the denominator is called Cancellation.
When common factors exist on both sides of an equation, canceling can be done.
By adding and subtracting common factors to both sides of an equation, canceling can be done.
First, the numerator and the denominator are written as a product of their factors. Then the common factors are cancelled.
A. - 20
C. - 30
D. - 5
Correct Answer: D
Step 1: 5a = - 25 [Original equation.
Step 2: (5a)/5 = - 25/5 [Divide both sides by 5.]
Step 3:a = - 5