-3n+8n=-15

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Solution for -3n+8n=-15 equation: 



-3n+8n=-15

We move all terms to the left:

-3n+8n-(-15)=0

We add all the numbers together, and all the variables

5n+15=0

We move all terms containing n to the left, all other terms to the right

5n=-15

n=-15/5

n=-3

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