Solve for x
x=-6.5
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5.7-8x-4x=83.7
Subtract 4x from both sides.
5.7-12x=83.7
Combine -8x and -4x to get -12x.
-12x=83.7-5.7
Subtract 5.7 from both sides.
-12x=78
Subtract 5.7 from 83.7 to get 78.
x=\frac{78}{-12}
Divide both sides by -12.
x=-\frac{13}{2}
Reduce the fraction \frac{78}{-12} to lowest terms by extracting and canceling out 6.
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