(X-21)=(3x+1)

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Solution for (X-21)=(3x+1) equation: 



(X-21)=(3X+1)

We move all terms to the left:

(X-21)-((3X+1))=0

We get rid of parentheses

X-((3X+1))-21=0



We calculate terms in parentheses: -((3X+1)), so:

(3X+1)

We get rid of parentheses

3X+1

Back to the equation:

-(3X+1)



We get rid of parentheses

X-3X-1-21=0

We add all the numbers together, and all the variables

-2X-22=0

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

-2X=22

X=22/-2

X=-11

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