I think of a number, halve it, add on 9 and the answer is 22.5

Question

Answer each question by writing down and equation and solving it.

Answer 1

I think of a number, halve it, add on 9 and the answer is 22.5

I think of a number: call it x

halve it: that gives us x/2

add on 9:now we have x/2 + 9

and the answer is 22.5: so x/2 + 9 = 22.5

x/2 + 9 = 22.5

x/2 = 22.5 - 9

x/2 = 13.5

x = 2*13.5

x = 27

Answer 2

x=27