Solve for x
x=-85
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180-180-75-x+180-2x=360
Multiply both sides of the equation by 2.
-75-x+180-2x=360
Subtract 180 from 180 to get 0.
105-x-2x=360
Add -75 and 180 to get 105.
105-3x=360
Combine -x and -2x to get -3x.
-3x=360-105
Subtract 105 from both sides.
-3x=255
Subtract 105 from 360 to get 255.
x=\frac{255}{-3}
Divide both sides by -3.
x=-85
Divide 255 by -3 to get -85.
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