-21=n-7.5+0.8

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Solution for -21=n-7.5+0.8 equation: 



-21=n-7.5+0.8

We move all terms to the left:

-21-(n-7.5+0.8)=0

We add all the numbers together, and all the variables

-(n-6.7)-21=0

We get rid of parentheses

-n+6.7-21=0

We add all the numbers together, and all the variables

-1n-14.3=0

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

-n=14.3

n=14.3/-1

n=-14+0.3/1

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