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8.2n+8=-8.4
We move all terms to the left:
8.2n+8-(-8.4)=0
We add all the numbers together, and all the variables
8.2n+16.4=0
We move all terms containing n to the left, all other terms to the right
8.2n=-16.4
n=-16.4/8.2
n=-2
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