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3.0.7n=-3.5
We move all terms to the left:
3.0.7n-(-3.5)=0
We add all the numbers together, and all the variables
2.1n+3.5=0
We move all terms containing n to the left, all other terms to the right
2.1n=-3.5
n=-3.5/2.1
n=-1+1/1.5
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