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