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-3x+2x=8+5
We move all terms to the left:
-3x+2x-(8+5)=0
We add all the numbers together, and all the variables
-3x+2x-13=0
We add all the numbers together, and all the variables
-1x-13=0
We move all terms containing x to the left, all other terms to the right
-x=13
x=13/-1
x=-13
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