(x+20)=(4x-100)

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Solution for (x+20)=(4x-100) equation: 



(x+20)=(4x-100)

We move all terms to the left:

(x+20)-((4x-100))=0

We get rid of parentheses

x-((4x-100))+20=0



We calculate terms in parentheses: -((4x-100)), so:

(4x-100)

We get rid of parentheses

4x-100

Back to the equation:

-(4x-100)



We get rid of parentheses

x-4x+100+20=0

We add all the numbers together, and all the variables

-3x+120=0

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

-3x=-120

x=-120/-3

x=+40

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