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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