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-12.1=1+6n-3.5
We move all terms to the left:
-12.1-(1+6n-3.5)=0
We add all the numbers together, and all the variables
-(6n-2.5)-12.1=0
We get rid of parentheses
-6n+2.5-12.1=0
We add all the numbers together, and all the variables
-6n-9.6=0
We move all terms containing n to the left, all other terms to the right
-6n=9.6
n=9.6/-6
n=-1+1/1.66666666667
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