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.4n-6=2n+12
We move all terms to the left:
.4n-6-(2n+12)=0
We get rid of parentheses
.4n-2n-12-6=0
We add all the numbers together, and all the variables
-1.6n-18=0
We move all terms containing n to the left, all other terms to the right
-1.6n=18
n=18/-1.6
n=-11+0.4/1.6
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