Solve for x
x=300
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\frac{1}{25}x-12=0
Swap sides so that all variable terms are on the left hand side.
\frac{1}{25}x=12
Add 12 to both sides. Anything plus zero gives itself.
x=12\times 25
Multiply both sides by 25, the reciprocal of \frac{1}{25}.
x=300
Multiply 12 and 25 to get 300.
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