Solve for x
x=80
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\frac{1}{20}x=4
Combine \frac{4}{5}x and -\frac{3}{4}x to get \frac{1}{20}x.
x=4\times 20
Multiply both sides by 20, the reciprocal of \frac{1}{20}.
x=80
Multiply 4 and 20 to get 80.
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