180-x=20+2(90-x)

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Solution for 180-x=20+2(90-x) equation: 



180-x=20+2(90-x)

We move all terms to the left:

180-x-(20+2(90-x))=0

We add all the numbers together, and all the variables

-x-(20+2(-1x+90))+180=0

We add all the numbers together, and all the variables

-1x-(20+2(-1x+90))+180=0



We calculate terms in parentheses: -(20+2(-1x+90)), so:

20+2(-1x+90)

determiningTheFunctionDomain
2(-1x+90)+20

We multiply parentheses

-2x+180+20

We add all the numbers together, and all the variables

-2x+200

Back to the equation:

-(-2x+200)



We get rid of parentheses

-1x+2x-200+180=0

We add all the numbers together, and all the variables

x-20=0

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

x=20

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