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668=20x+4-3
We move all terms to the left:
668-(20x+4-3)=0
We add all the numbers together, and all the variables
-(20x+1)+668=0
We get rid of parentheses
-20x-1+668=0
We add all the numbers together, and all the variables
-20x+667=0
We move all terms containing x to the left, all other terms to the right
-20x=-667
x=-667/-20
x=33+7/20
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