Solve for x
x=2.5
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30=\frac{15x}{1.25}
Expand \frac{3}{0.1} by multiplying both numerator and the denominator by 10. Anything divided by one gives itself.
30=12x
Divide 15x by 1.25 to get 12x.
12x=30
Swap sides so that all variable terms are on the left hand side.
x=\frac{30}{12}
Divide both sides by 12.
x=\frac{5}{2}
Reduce the fraction \frac{30}{12} to lowest terms by extracting and canceling out 6.
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