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90=4x-2+x
We move all terms to the left:
90-(4x-2+x)=0
We add all the numbers together, and all the variables
-(5x-2)+90=0
We get rid of parentheses
-5x+2+90=0
We add all the numbers together, and all the variables
-5x+92=0
We move all terms containing x to the left, all other terms to the right
-5x=-92
x=-92/-5
x=18+2/5
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