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-12=0.6n+18
We move all terms to the left:
-12-(0.6n+18)=0
We get rid of parentheses
-0.6n-18-12=0
We add all the numbers together, and all the variables
-0.6n-30=0
We move all terms containing n to the left, all other terms to the right
-0.6n=30
n=30/-0.6
n=-50
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