Question

What is the value of x in the equation x – y = 30, when y = 15?

Answer 1

x – y = 30, when y = 15
x - 15 = 30
x = 30 + 15
x = 45

answer: when y = 15, x = 45

Answer 2

The answer would be 45.

1. Add 15 to both sides (x = 30 + 15)

2. Simplify 30 + 15 to 45 (x = 45).