90-x=5(180-x)

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Solution for 90-x=5(180-x) equation: 



90-x=5(180-x)

We move all terms to the left:

90-x-(5(180-x))=0

We add all the numbers together, and all the variables

-x-(5(-1x+180))+90=0

We add all the numbers together, and all the variables

-1x-(5(-1x+180))+90=0



We calculate terms in parentheses: -(5(-1x+180)), so:

5(-1x+180)

We multiply parentheses

-5x+900

Back to the equation:

-(-5x+900)



We get rid of parentheses

-1x+5x-900+90=0

We add all the numbers together, and all the variables

4x-810=0

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

4x=810

x=810/4

x=202+1/2

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