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(3+2n)=10
We move all terms to the left:
(3+2n)-(10)=0
We add all the numbers together, and all the variables
(2n+3)-10=0
We get rid of parentheses
2n+3-10=0
We add all the numbers together, and all the variables
2n-7=0
We move all terms containing n to the left, all other terms to the right
2n=7
n=7/2
n=3+1/2
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