Solve for x
x=15
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0.8x=12
Combine 3.6x and -2.8x to get 0.8x.
x=\frac{12}{0.8}
Divide both sides by 0.8.
x=\frac{120}{8}
Expand \frac{12}{0.8} by multiplying both numerator and the denominator by 10.
x=15
Divide 120 by 8 to get 15.
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