6n-4+5n+7=90

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Solution for 6n-4+5n+7=90 equation: 



6n-4+5n+7=90

We move all terms to the left:

6n-4+5n+7-(90)=0

We add all the numbers together, and all the variables

11n-87=0

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

11n=87

n=87/11

n=7+10/11

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