4n+5n+15=5n+7n=

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Solution for 4n+5n+15=5n+7n= equation: 



4n+5n+15=5n+7n=

We move all terms to the left:

4n+5n+15-(5n+7n)=0

We add all the numbers together, and all the variables

4n+5n-(+12n)+15=0

We add all the numbers together, and all the variables

9n-(+12n)+15=0

We get rid of parentheses

9n-12n+15=0

We add all the numbers together, and all the variables

-3n+15=0

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

-3n=-15

n=-15/-3

n=+5

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