Solve for a
a=\frac{4}{7}\approx 0.571428571
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-\frac{3}{4}a+6a=\frac{6}{2}
Divide both sides by 2.
-\frac{3}{4}a+6a=3
Divide 6 by 2 to get 3.
\frac{21}{4}a=3
Combine -\frac{3}{4}a and 6a to get \frac{21}{4}a.
a=3\times \frac{4}{21}
Multiply both sides by \frac{4}{21}, the reciprocal of \frac{21}{4}.
a=\frac{3\times 4}{21}
Express 3\times \frac{4}{21} as a single fraction.
a=\frac{12}{21}
Multiply 3 and 4 to get 12.
a=\frac{4}{7}
Reduce the fraction \frac{12}{21} to lowest terms by extracting and canceling out 3.
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