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7x+8+4x=-x+3x+8
We move all terms to the left:
7x+8+4x-(-x+3x+8)=0
We add all the numbers together, and all the variables
7x+4x-(2x+8)+8=0
We add all the numbers together, and all the variables
11x-(2x+8)+8=0
We get rid of parentheses
11x-2x-8+8=0
We add all the numbers together, and all the variables
9x=0
x=0/9
x=0
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