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90=2x+3+9x-11
We move all terms to the left:
90-(2x+3+9x-11)=0
We add all the numbers together, and all the variables
-(11x-8)+90=0
We get rid of parentheses
-11x+8+90=0
We add all the numbers together, and all the variables
-11x+98=0
We move all terms containing x to the left, all other terms to the right
-11x=-98
x=-98/-11
x=8+10/11
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