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-12-11=x+19+2x
We move all terms to the left:
-12-11-(x+19+2x)=0
We add all the numbers together, and all the variables
-(3x+19)-12-11=0
We add all the numbers together, and all the variables
-(3x+19)-23=0
We get rid of parentheses
-3x-19-23=0
We add all the numbers together, and all the variables
-3x-42=0
We move all terms containing x to the left, all other terms to the right
-3x=42
x=42/-3
x=-14
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