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7x+13-(13+15+13)-(125-853)+12-13*89+789=13x
We move all terms to the left:
7x+13-(13+15+13)-(125-853)+12-13*89+789-(13x)=0
We add all the numbers together, and all the variables
7x-13x+13+12+789-41-(-728)-13*89=0
We add all the numbers together, and all the variables
-6x+344=0
We move all terms containing x to the left, all other terms to the right
-6x=-344
x=-344/-6
x=57+1/3
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