Question

Explain how to solve the equation
.
b – 7 = 12

Answer 1

b = 19

Explanation:

The easiest way to solve equations like this is to do something referred to as "undoing in reverse order." Now, to undo subtraction, you have to add.

b - 7 = 12

b - 7 (+ 7) = 12 (+7)

b = 19

Therefore, the answer is 19.

Answer 2

b=19

Explanation:

Given:

b-7=12

Adding 7 to both sides

b-7+7=12+7

b=19