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8x=20-4x
We move all terms to the left:
8x-(20-4x)=0
We add all the numbers together, and all the variables
8x-(-4x+20)=0
We get rid of parentheses
8x+4x-20=0
We add all the numbers together, and all the variables
12x-20=0
We move all terms containing x to the left, all other terms to the right
12x=20
x=20/12
x=1+2/3
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