Solve for x
x = \frac{7}{3} = 2\frac{1}{3} \approx 2.333333333
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9x=21
Combine 2x and 7x to get 9x.
x=\frac{21}{9}
Divide both sides by 9.
x=\frac{7}{3}
Reduce the fraction \frac{21}{9} to lowest terms by extracting and canceling out 3.
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