Question

Nigel tried to solve an equation step by step.

1/2(2h-4)=20

2h−4=10 step1
2h=14 step2
h=7 step3
​
Find Nigel's mistake.




​

​

Answer 1

First multiply both sides by 2(he didnt do it)
2*1/2(2h-4)=20*2
2h-4=40
2h=44
h=22

Answer 2

In the first step, Nigel didn't distribute 1/2 into the brackets.