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\frac{120}{76}=\frac{5x}{3,8}
Expand \frac{12}{7,6} by multiplying both numerator and the denominator by 10.
\frac{30}{19}=\frac{5x}{3,8}
Reduce the fraction \frac{120}{76} to lowest terms by extracting and canceling out 4.
\frac{30}{19}=\frac{25}{19}x
Divide 5x by 3,8 to get \frac{25}{19}x.
\frac{25}{19}x=\frac{30}{19}
Swap sides so that all variable terms are on the left hand side.
x=\frac{\frac{30}{19}}{\frac{25}{19}}
Divide both sides by \frac{25}{19}.
x=\frac{30}{19\times \frac{25}{19}}
Express \frac{\frac{30}{19}}{\frac{25}{19}} as a single fraction.
x=\frac{30}{25}
Multiply 19 and \frac{25}{19} to get 25.
x=\frac{6}{5}
Reduce the fraction \frac{30}{25} to lowest terms by extracting and canceling out 5.