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12+2n=-(4-2)
We move all terms to the left:
12+2n-(-(4-2))=0
We add all the numbers together, and all the variables
2n+12-(-2)=0
We add all the numbers together, and all the variables
2n+14=0
We move all terms containing n to the left, all other terms to the right
2n=-14
n=-14/2
n=-7
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