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3a-1=\frac{3}{2}
Swap sides so that all variable terms are on the left hand side.
3a=\frac{3}{2}+1
Add 1 to both sides.
3a=\frac{3}{2}+\frac{2}{2}
Convert 1 to fraction \frac{2}{2}.
3a=\frac{3+2}{2}
Since \frac{3}{2} and \frac{2}{2} have the same denominator, add them by adding their numerators.
3a=\frac{5}{2}
Add 3 and 2 to get 5.
a=\frac{\frac{5}{2}}{3}
Divide both sides by 3.
a=\frac{5}{2\times 3}
Express \frac{\frac{5}{2}}{3} as a single fraction.
a=\frac{5}{6}
Multiply 2 and 3 to get 6.