Question

How do you solve `x-7=13`?

Answer 1

`x = 20`

Explanation:

You can perform an operation on both sides of an equation in order to preserve the validity of the equation and simplify it. Here's how you do it for yours:

`x - 7 = 13`

`x - 7 + 7 = 13 + 7`

`x + 0 = 20`

`x = 20`

Answer 2

`x=20`

Explanation:

`x-7=13`
or
`x=13+7`
or
`x=20`