87=7n+3

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Solution for 87=7n+3 equation: 



87=7n+3

We move all terms to the left:

87-(7n+3)=0

We get rid of parentheses

-7n-3+87=0

We add all the numbers together, and all the variables

-7n+84=0

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

-7n=-84

n=-84/-7

n=+12

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