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2n+3=42+4
We move all terms to the left:
2n+3-(42+4)=0
We add all the numbers together, and all the variables
2n+3-46=0
We add all the numbers together, and all the variables
2n-43=0
We move all terms containing n to the left, all other terms to the right
2n=43
n=43/2
n=21+1/2
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