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30\left(-\frac{6}{10}\right)x+12=10\left(x-1\right)+30
Multiply both sides of the equation by 30, the least common multiple of 10,5,3.
30\left(-\frac{3}{5}\right)x+12=10\left(x-1\right)+30
Reduce the fraction \frac{6}{10} to lowest terms by extracting and canceling out 2.
\frac{30\left(-3\right)}{5}x+12=10\left(x-1\right)+30
Express 30\left(-\frac{3}{5}\right) as a single fraction.
\frac{-90}{5}x+12=10\left(x-1\right)+30
Multiply 30 and -3 to get -90.
-18x+12=10\left(x-1\right)+30
Divide -90 by 5 to get -18.
-18x+12=10x-10+30
Use the distributive property to multiply 10 by x-1.
-18x+12=10x+20
Add -10 and 30 to get 20.
-18x+12-10x=20
Subtract 10x from both sides.
-28x+12=20
Combine -18x and -10x to get -28x.
-28x=20-12
Subtract 12 from both sides.
-28x=8
Subtract 12 from 20 to get 8.
x=\frac{8}{-28}
Divide both sides by -28.
x=-\frac{2}{7}
Reduce the fraction \frac{8}{-28} to lowest terms by extracting and canceling out 4.