7n-7=4+5

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Solution for 7n-7=4+5 equation: 



7n-7=4+5

We move all terms to the left:

7n-7-(4+5)=0

We add all the numbers together, and all the variables

7n-7-9=0

We add all the numbers together, and all the variables

7n-16=0

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

7n=16

n=16/7

n=2+2/7

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