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5x-8=20+4x
We move all terms to the left:
5x-8-(20+4x)=0
We add all the numbers together, and all the variables
5x-(4x+20)-8=0
We get rid of parentheses
5x-4x-20-8=0
We add all the numbers together, and all the variables
x-28=0
We move all terms containing x to the left, all other terms to the right
x=28
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