-15=-7-8n

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Solution for -15=-7-8n equation: 



-15=-7-8n

We move all terms to the left:

-15-(-7-8n)=0

We add all the numbers together, and all the variables

-(-8n-7)-15=0

We get rid of parentheses

8n+7-15=0

We add all the numbers together, and all the variables

8n-8=0

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

8n=8

n=8/8

n=1

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