Question

What operation would you use to solve the equation below for y? y - 15 = 20

Answer 1

Easy. Just take -15 to the right hand side of the equation, which will give you, y = 20+15, implies y = 35.

Answer 2

y = 35

Explanation:

`y - 15 = 20 \\ y - 15 + 15 = 20 + 15 \\ y = 20 + 15 \\ y = 35`

I hope that is useful for you :)