Solve for x
x=25
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\frac{1}{20}x-4^{-1}=1
Calculate 20 to the power of -1 and get \frac{1}{20}.
\frac{1}{20}x-\frac{1}{4}=1
Calculate 4 to the power of -1 and get \frac{1}{4}.
\frac{1}{20}x=1+\frac{1}{4}
Add \frac{1}{4} to both sides.
\frac{1}{20}x=\frac{5}{4}
Add 1 and \frac{1}{4} to get \frac{5}{4}.
x=\frac{5}{4}\times 20
Multiply both sides by 20, the reciprocal of \frac{1}{20}.
x=25
Multiply \frac{5}{4} and 20 to get 25.
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