Solve for v
v=10
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-0.2v+6.4-0.5v=-0.6
Subtract 0.5v from both sides.
-0.7v+6.4=-0.6
Combine -0.2v and -0.5v to get -0.7v.
-0.7v=-0.6-6.4
Subtract 6.4 from both sides.
-0.7v=-7
Subtract 6.4 from -0.6 to get -7.
v=\frac{-7}{-0.7}
Divide both sides by -0.7.
v=\frac{-70}{-7}
Expand \frac{-7}{-0.7} by multiplying both numerator and the denominator by 10.
v=10
Divide -70 by -7 to get 10.
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