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7x-4=-3+8x
We move all terms to the left:
7x-4-(-3+8x)=0
We add all the numbers together, and all the variables
7x-(8x-3)-4=0
We get rid of parentheses
7x-8x+3-4=0
We add all the numbers together, and all the variables
-1x-1=0
We move all terms containing x to the left, all other terms to the right
-x=1
x=1/-1
x=-1
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