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-11=2(2x+1)-1
We move all terms to the left:
-11-(2(2x+1)-1)=0
We calculate terms in parentheses: -(2(2x+1)-1), so:We get rid of parentheses
2(2x+1)-1
We multiply parentheses
4x+2-1
We add all the numbers together, and all the variables
4x+1
Back to the equation:
-(4x+1)
-4x-1-11=0
We add all the numbers together, and all the variables
-4x-12=0
We move all terms containing x to the left, all other terms to the right
-4x=12
x=12/-4
x=-3
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