(x-18)=(2x-63)=90

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Solution for (x-18)=(2x-63)=90 equation: 



(x-18)=(2x-63)=90

We move all terms to the left:

(x-18)-((2x-63))=0

We get rid of parentheses

x-((2x-63))-18=0



We calculate terms in parentheses: -((2x-63)), so:

(2x-63)

We get rid of parentheses

2x-63

Back to the equation:

-(2x-63)



We get rid of parentheses

x-2x+63-18=0

We add all the numbers together, and all the variables

-1x+45=0

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

-x=-45

x=-45/-1

x=+45

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