Question

What is the value of x in the equation x - y = 30, when y = 15?
8
80
200

Answer 1

I suppose the value of x is 45, so it’s none of the above answers.

Working:
x-y = 30
x- 15= 30
x= 30 + 15
x = 45

Answer 2

`x=45`

Explanation:

`x-15=30`

`x=30+15`

`x=45`