2+7n=9n-4

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Solution for 2+7n=9n-4 equation: 



2+7n=9n-4

We move all terms to the left:

2+7n-(9n-4)=0

We get rid of parentheses

7n-9n+4+2=0

We add all the numbers together, and all the variables

-2n+6=0

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

-2n=-6

n=-6/-2

n=+3

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