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3.15=-45+5n
We move all terms to the left:
3.15-(-45+5n)=0
We add all the numbers together, and all the variables
-(5n-45)+3.15=0
We get rid of parentheses
-5n+45+3.15=0
We add all the numbers together, and all the variables
-5n+48.15=0
We move all terms containing n to the left, all other terms to the right
-5n=-48.15
n=-48.15/-5
n=9+2.7391304347826/4.3478260869565
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