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12+1.5n=15+0.5
We move all terms to the left:
12+1.5n-(15+0.5)=0
We add all the numbers together, and all the variables
1.5n+12-(15.5)=0
We add all the numbers together, and all the variables
1.5n-3.5=0
We move all terms containing n to the left, all other terms to the right
1.5n=3.5
n=3.5/1.5
n=2+0.5/1.5
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