7n-9=2n+1

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Solution for 7n-9=2n+1 equation: 



7n-9=2n+1

We move all terms to the left:

7n-9-(2n+1)=0

We get rid of parentheses

7n-2n-1-9=0

We add all the numbers together, and all the variables

5n-10=0

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

5n=10

n=10/5

n=2

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