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7.1-(-(-2.5))=n
We move all terms to the left:
7.1-(-(-2.5))-(n)=0
We add all the numbers together, and all the variables
-1n+4.6=0
We move all terms containing n to the left, all other terms to the right
-n=-4.6
n=-4.6/-1
n=4+0.6/1
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