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170=3x+2(2x)
We move all terms to the left:
170-(3x+2(2x))=0
We add all the numbers together, and all the variables
-(+25x)+170=0
We get rid of parentheses
-25x+170=0
We move all terms containing x to the left, all other terms to the right
-25x=-170
x=-170/-25
x=6+4/5
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