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90=x-6+3x-8
We move all terms to the left:
90-(x-6+3x-8)=0
We add all the numbers together, and all the variables
-(4x-14)+90=0
We get rid of parentheses
-4x+14+90=0
We add all the numbers together, and all the variables
-4x+104=0
We move all terms containing x to the left, all other terms to the right
-4x=-104
x=-104/-4
x=+26
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