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1911=39x+20
We move all terms to the left:
1911-(39x+20)=0
We get rid of parentheses
-39x-20+1911=0
We add all the numbers together, and all the variables
-39x+1891=0
We move all terms containing x to the left, all other terms to the right
-39x=-1891
x=-1891/-39
x=48+19/39
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