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1.5n+1.3n=-8.4
We move all terms to the left:
1.5n+1.3n-(-8.4)=0
We add all the numbers together, and all the variables
2.8n+8.4=0
We move all terms containing n to the left, all other terms to the right
2.8n=-8.4
n=-8.4/2.8
n=-3+1.7763568394003E-15/2.8
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