7n-(3+2n)=12

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Solution for 7n-(3+2n)=12 equation: 



7n-(3+2n)=12

We move all terms to the left:

7n-(3+2n)-(12)=0

We add all the numbers together, and all the variables

7n-(2n+3)-12=0

We get rid of parentheses

7n-2n-3-12=0

We add all the numbers together, and all the variables

5n-15=0

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

5n=15

n=15/5

n=3

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