Solve for x
x=-1
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0.8x=-0.7-0.1
Subtract 0.1 from both sides.
0.8x=-0.8
Subtract 0.1 from -0.7 to get -0.8.
x=\frac{-0.8}{0.8}
Divide both sides by 0.8.
x=-1
Divide -0.8 by 0.8 to get -1.
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