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X+2=2(X+20)
We move all terms to the left:
X+2-(2(X+20))=0
We calculate terms in parentheses: -(2(X+20)), so:We get rid of parentheses
2(X+20)
We multiply parentheses
2X+40
Back to the equation:
-(2X+40)
X-2X-40+2=0
We add all the numbers together, and all the variables
-1X-38=0
We move all terms containing X to the left, all other terms to the right
-X=38
X=38/-1
X=-38
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