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1.25+0.2n=2.7
We move all terms to the left:
1.25+0.2n-(2.7)=0
We add all the numbers together, and all the variables
0.2n-1.45=0
We move all terms containing n to the left, all other terms to the right
0.2n=1.45
n=1.45/0.2
n=7+0.05/0.2
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