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40-\left(1\times 10+7\right)=3\times 10+7
Multiply both sides of the equation by 10.
40-\left(10+7\right)=3\times 10+7
Multiply 1 and 10 to get 10.
40-17=3\times 10+7
Add 10 and 7 to get 17.
23=3\times 10+7
Subtract 17 from 40 to get 23.
23=30+7
Multiply 3 and 10 to get 30.
23=37
Add 30 and 7 to get 37.
\text{false}
Compare 23 and 37.
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