Solve for x
x=8
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2x+80-4x=64
Use the distributive property to multiply 4 by 20-x.
-2x+80=64
Combine 2x and -4x to get -2x.
-2x=64-80
Subtract 80 from both sides.
-2x=-16
Subtract 80 from 64 to get -16.
x=\frac{-16}{-2}
Divide both sides by -2.
x=8
Divide -16 by -2 to get 8.
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