Solve for x
x = \frac{7}{5} = 1\frac{2}{5} = 1.4
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15x=21
Combine -3x and 18x to get 15x.
x=\frac{21}{15}
Divide both sides by 15.
x=\frac{7}{5}
Reduce the fraction \frac{21}{15} to lowest terms by extracting and canceling out 3.
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