7+5n-9=13

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Solution for 7+5n-9=13 equation: 



7+5n-9=13

We move all terms to the left:

7+5n-9-(13)=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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