Solve for a
a=\frac{2}{7}\approx 0.285714286
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5a-2a=\frac{6}{7}
Subtract 2a from both sides.
3a=\frac{6}{7}
Combine 5a and -2a to get 3a.
a=\frac{\frac{6}{7}}{3}
Divide both sides by 3.
a=\frac{6}{7\times 3}
Express \frac{\frac{6}{7}}{3} as a single fraction.
a=\frac{6}{21}
Multiply 7 and 3 to get 21.
a=\frac{2}{7}
Reduce the fraction \frac{6}{21} to lowest terms by extracting and canceling out 3.
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