20 \% x - 1 = 0.4
Solve for x
x=7
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\frac{1}{5}x-1=0.4
Reduce the fraction \frac{20}{100} to lowest terms by extracting and canceling out 20.
\frac{1}{5}x=0.4+1
Add 1 to both sides.
\frac{1}{5}x=1.4
Add 0.4 and 1 to get 1.4.
x=1.4\times 5
Multiply both sides by 5, the reciprocal of \frac{1}{5}.
x=7
Multiply 1.4 and 5 to get 7.
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