Math Question
![Nigel tried to solve an equation step by step.
\[
\frac{1}{2}(2 h-4)=20
\]
\[
2 h-4=10 \quad \text { Step } 1
\]
\[
2 h=14 \quad \text { Step } 2
\]
\[
h=7 \quad \text { Step } 3
\]
Find Nigel's mistake.](https://d3hlidq5bf9vg0.cloudfront.net/app-server-student/2022/2/25/268be83d-f963-44e8-abdb-97642f36e2af.png "Nigel tried to solve an equation step by step.
\[
\frac{1}{2}(2 h-4)=20
\]
\[
2 h-4=10 \quad \text { Step } 1
\]
\[
2 h=14 \quad \text { Step } 2
\]
\[
h=7 \quad \text { Step } 3
\]
Find Nigel's mistake.")
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