4+5n-7=7

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



4+5n-7=7

We move all terms to the left:

4+5n-7-(7)=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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