The sum of a number and -9 is -36 what is the number

Question

Writing and solving equations

Answer 1

First, let's write this out in equation form. Using x as our unknown number, the equation is:

x + -9 = -36

Or, to simplify things, x - 9 = -36

To isolate x, we add +9 on both sides of the equation.

x - 9 + 9 = -36 + 9

This leaves us with x = -36 + 9.

Thus, x = -27