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3+7x=+23
We move all terms to the left:
3+7x-(+23)=0
We add all the numbers together, and all the variables
7x+3-23=0
We add all the numbers together, and all the variables
7x-20=0
We move all terms containing x to the left, all other terms to the right
7x=20
x=20/7
x=2+6/7
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