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6x-77=3x+4+5x-31
We move all terms to the left:
6x-77-(3x+4+5x-31)=0
We add all the numbers together, and all the variables
6x-(8x-27)-77=0
We get rid of parentheses
6x-8x+27-77=0
We add all the numbers together, and all the variables
-2x-50=0
We move all terms containing x to the left, all other terms to the right
-2x=50
x=50/-2
x=-25
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