Solve for x
x=20
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360-4x+40=2\left(180-x\right)
Use the distributive property to multiply 4 by 90-x.
400-4x=2\left(180-x\right)
Add 360 and 40 to get 400.
400-4x=360-2x
Use the distributive property to multiply 2 by 180-x.
400-4x+2x=360
Add 2x to both sides.
400-2x=360
Combine -4x and 2x to get -2x.
-2x=360-400
Subtract 400 from both sides.
-2x=-40
Subtract 400 from 360 to get -40.
x=\frac{-40}{-2}
Divide both sides by -2.
x=20
Divide -40 by -2 to get 20.
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