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3x\times \frac{2}{3}+\frac{5}{4}x-3=3x\times \frac{1}{3}-\frac{9}{8}x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 3x, the least common multiple of 3,x.
2x+\frac{5}{4}x-3=3x\times \frac{1}{3}-\frac{9}{8}x
Cancel out 3 and 3.
\frac{13}{4}x-3=3x\times \frac{1}{3}-\frac{9}{8}x
Combine 2x and \frac{5}{4}x to get \frac{13}{4}x.
\frac{13}{4}x-3=x-\frac{9}{8}x
Cancel out 3 and 3.
\frac{13}{4}x-3=-\frac{1}{8}x
Combine x and -\frac{9}{8}x to get -\frac{1}{8}x.
\frac{13}{4}x-3+\frac{1}{8}x=0
Add \frac{1}{8}x to both sides.
\frac{27}{8}x-3=0
Combine \frac{13}{4}x and \frac{1}{8}x to get \frac{27}{8}x.
\frac{27}{8}x=3
Add 3 to both sides. Anything plus zero gives itself.
x=3\times \frac{8}{27}
Multiply both sides by \frac{8}{27}, the reciprocal of \frac{27}{8}.
x=\frac{3\times 8}{27}
Express 3\times \frac{8}{27} as a single fraction.
x=\frac{24}{27}
Multiply 3 and 8 to get 24.
x=\frac{8}{9}
Reduce the fraction \frac{24}{27} to lowest terms by extracting and canceling out 3.