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3x+17-2x+5x=1987
We move all terms to the left:
3x+17-2x+5x-(1987)=0
We add all the numbers together, and all the variables
6x-1970=0
We move all terms containing x to the left, all other terms to the right
6x=1970
x=1970/6
x=328+1/3
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