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133=11x+12.x
We move all terms to the left:
133-(11x+12.x)=0
We add all the numbers together, and all the variables
-(+23x)+133=0
We get rid of parentheses
-23x+133=0
We move all terms containing x to the left, all other terms to the right
-23x=-133
x=-133/-23
x=5+18/23
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