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3x-4=\frac{4}{5}
Divide both sides by 5.
3x=\frac{4}{5}+4
Add 4 to both sides.
3x=\frac{4}{5}+\frac{20}{5}
Convert 4 to fraction \frac{20}{5}.
3x=\frac{4+20}{5}
Since \frac{4}{5} and \frac{20}{5} have the same denominator, add them by adding their numerators.
3x=\frac{24}{5}
Add 4 and 20 to get 24.
x=\frac{\frac{24}{5}}{3}
Divide both sides by 3.
x=\frac{24}{5\times 3}
Express \frac{\frac{24}{5}}{3} as a single fraction.
x=\frac{24}{15}
Multiply 5 and 3 to get 15.
x=\frac{8}{5}
Reduce the fraction \frac{24}{15} to lowest terms by extracting and canceling out 3.