9n+12=90

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Solution for 9n+12=90 equation: 



9n+12=90

We move all terms to the left:

9n+12-(90)=0

We add all the numbers together, and all the variables

9n-78=0

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

9n=78

n=78/9

n=8+2/3

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