n+4n-8+4n-7=66

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Solution for n+4n-8+4n-7=66 equation: 



n+4n-8+4n-7=66

We move all terms to the left:

n+4n-8+4n-7-(66)=0

We add all the numbers together, and all the variables

9n-81=0

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

9n=81

n=81/9

n=9

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