180-x=2(90-x)+40

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Solution for 180-x=2(90-x)+40 equation: 



180-x=2(90-x)+40

We move all terms to the left:

180-x-(2(90-x)+40)=0

We add all the numbers together, and all the variables

-x-(2(-1x+90)+40)+180=0

We add all the numbers together, and all the variables

-1x-(2(-1x+90)+40)+180=0



We calculate terms in parentheses: -(2(-1x+90)+40), so:

2(-1x+90)+40

We multiply parentheses

-2x+180+40

We add all the numbers together, and all the variables

-2x+220

Back to the equation:

-(-2x+220)



We get rid of parentheses

-1x+2x-220+180=0

We add all the numbers together, and all the variables

x-40=0

We move all terms containing x to the left, all other terms to the right

x=40

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