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12-20+8x+4=8x+19-3x
We move all terms to the left:
12-20+8x+4-(8x+19-3x)=0
We add all the numbers together, and all the variables
8x-(5x+19)+12-20+4=0
We add all the numbers together, and all the variables
8x-(5x+19)-4=0
We get rid of parentheses
8x-5x-19-4=0
We add all the numbers together, and all the variables
3x-23=0
We move all terms containing x to the left, all other terms to the right
3x=23
x=23/3
x=7+2/3
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