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-20+4x=12+3x
We move all terms to the left:
-20+4x-(12+3x)=0
We add all the numbers together, and all the variables
4x-(3x+12)-20=0
We get rid of parentheses
4x-3x-12-20=0
We add all the numbers together, and all the variables
x-32=0
We move all terms containing x to the left, all other terms to the right
x=32
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