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x-2+13=(x-7)3
We move all terms to the left:
x-2+13-((x-7)3)=0
We add all the numbers together, and all the variables
x-((x-7)3)+11=0
We calculate terms in parentheses: -((x-7)3), so:We get rid of parentheses
(x-7)3
We multiply parentheses
3x-21
Back to the equation:
-(3x-21)
x-3x+21+11=0
We add all the numbers together, and all the variables
-2x+32=0
We move all terms containing x to the left, all other terms to the right
-2x=-32
x=-32/-2
x=+16
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