Question

6)

Tim was 27 years old 9 years ago. Which equation will tell you how old he is now?
A)
X + 9 = 27
B)
x-9-27
0
X + 9 = -27
D)
x-9--27

Answer 1

It has to be x - 9= 27

so it can be x=36

Answer 2

If Tim was 27 years old 9 years ago, that’s the same as 27 + 9 = x where x is his current age.

We can rearrange this and bring 9 to the other side.

27 = x - 9

The last option D is correct.