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2(n+3)=7
We move all terms to the left:
2(n+3)-(7)=0
We multiply parentheses
2n+6-7=0
We add all the numbers together, and all the variables
2n-1=0
We move all terms containing n to the left, all other terms to the right
2n=1
n=1/2
n=1/2
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