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13=2(x+2)+3
We move all terms to the left:
13-(2(x+2)+3)=0
We calculate terms in parentheses: -(2(x+2)+3), so:We get rid of parentheses
2(x+2)+3
We multiply parentheses
2x+4+3
We add all the numbers together, and all the variables
2x+7
Back to the equation:
-(2x+7)
-2x-7+13=0
We add all the numbers together, and all the variables
-2x+6=0
We move all terms containing x to the left, all other terms to the right
-2x=-6
x=-6/-2
x=+3
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