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8x+4=28+2x
We move all terms to the left:
8x+4-(28+2x)=0
We add all the numbers together, and all the variables
8x-(2x+28)+4=0
We get rid of parentheses
8x-2x-28+4=0
We add all the numbers together, and all the variables
6x-24=0
We move all terms containing x to the left, all other terms to the right
6x=24
x=24/6
x=4
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