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-1.8+0.7n=15.7
We move all terms to the left:
-1.8+0.7n-(15.7)=0
We add all the numbers together, and all the variables
0.7n-17.5=0
We move all terms containing n to the left, all other terms to the right
0.7n=17.5
n=17.5/0.7
n=25
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