Solve for x
x=3
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-0.7x=6.6-8.7
Subtract 8.7 from both sides.
-0.7x=-2.1
Subtract 8.7 from 6.6 to get -2.1.
x=\frac{-2.1}{-0.7}
Divide both sides by -0.7.
x=\frac{-21}{-7}
Expand \frac{-2.1}{-0.7} by multiplying both numerator and the denominator by 10.
x=3
Divide -21 by -7 to get 3.
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