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3x-x=20+3
We move all terms to the left:
3x-x-(20+3)=0
We add all the numbers together, and all the variables
3x-x-23=0
We add all the numbers together, and all the variables
2x-23=0
We move all terms containing x to the left, all other terms to the right
2x=23
x=23/2
x=11+1/2
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