Solve for x
x = \frac{37}{2} = 18\frac{1}{2} = 18.5
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4x+7=81
Square both sides of the equation.
4x+7-7=81-7
Subtract 7 from both sides of the equation.
4x=81-7
Subtracting 7 from itself leaves 0.
4x=74
Subtract 7 from 81.
\frac{4x}{4}=\frac{74}{4}
Divide both sides by 4.
x=\frac{74}{4}
Dividing by 4 undoes the multiplication by 4.
x=\frac{37}{2}
Reduce the fraction \frac{74}{4} to lowest terms by extracting and canceling out 2.
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