7n-15+10n=20n-80-4n

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Solution for 7n-15+10n=20n-80-4n equation: 



7n-15+10n=20n-80-4n

We move all terms to the left:

7n-15+10n-(20n-80-4n)=0

We add all the numbers together, and all the variables

7n+10n-(16n-80)-15=0

We add all the numbers together, and all the variables

17n-(16n-80)-15=0

We get rid of parentheses

17n-16n+80-15=0

We add all the numbers together, and all the variables

n+65=0

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

n=-65

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