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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+1
Back to the equation:
-(2x+1)
-2x-1+13=0
We add all the numbers together, and all the variables
-2x+12=0
We move all terms containing x to the left, all other terms to the right
-2x=-12
x=-12/-2
x=+6
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