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180=90+x+2(2x-55)+2x+2x-55
We simplify the equation to the form, which is simple to understand
180=90+x+2(2x-55)+2x+2x-55
Reorder the terms in parentheses
180=90+x+(+4x-110)+2x+2x-55
Remove unnecessary parentheses
+180=+90+x+4x-110+2x+2x-55
We move all terms containing x to the left and all other terms to the right.
-1x-4x-2x-2x=+90-110-55-180
We simplify left and right side of the equation.
-9x=-255
We divide both sides of the equation by -9 to get x.
x=28.3333333333
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