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57-2x=8+5x
We move all terms to the left:
57-2x-(8+5x)=0
We add all the numbers together, and all the variables
-2x-(5x+8)+57=0
We get rid of parentheses
-2x-5x-8+57=0
We add all the numbers together, and all the variables
-7x+49=0
We move all terms containing x to the left, all other terms to the right
-7x=-49
x=-49/-7
x=+7
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