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-7x-3=x+3
We move all terms to the left:
-7x-3-(x+3)=0
We get rid of parentheses
-7x-x-3-3=0
We add all the numbers together, and all the variables
-8x-6=0
We move all terms containing x to the left, all other terms to the right
-8x=6
x=6/-8
x=-3/4
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