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15=5.3n
We move all terms to the left:
15-(5.3n)=0
We add all the numbers together, and all the variables
-(+5.3n)+15=0
We get rid of parentheses
-5.3n+15=0
We move all terms containing n to the left, all other terms to the right
-5.3n=-15
n=-15/-5.3
n=2+3.1428571428571/3.7857142857143
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