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90=8x-3
We move all terms to the left:
90-(8x-3)=0
We get rid of parentheses
-8x+3+90=0
We add all the numbers together, and all the variables
-8x+93=0
We move all terms containing x to the left, all other terms to the right
-8x=-93
x=-93/-8
x=11+5/8
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