(2n+3n)-(n+n)=15

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Solution for (2n+3n)-(n+n)=15 equation: 



(2n+3n)-(n+n)=15

We move all terms to the left:

(2n+3n)-(n+n)-(15)=0

We add all the numbers together, and all the variables

(+5n)-(+2n)-15=0

We get rid of parentheses

5n-2n-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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