(X+20)=(3x-40)

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Solution for (X+20)=(3x-40) equation: 



(X+20)=(3X-40)

We move all terms to the left:

(X+20)-((3X-40))=0

We get rid of parentheses

X-((3X-40))+20=0



We calculate terms in parentheses: -((3X-40)), so:

(3X-40)

We get rid of parentheses

3X-40

Back to the equation:

-(3X-40)



We get rid of parentheses

X-3X+40+20=0

We add all the numbers together, and all the variables

-2X+60=0

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

-2X=-60

X=-60/-2

X=+30

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