1-7(n+7)=-90

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Solution for 1-7(n+7)=-90 equation: 



1-7(n+7)=-90

We move all terms to the left:

1-7(n+7)-(-90)=0

We add all the numbers together, and all the variables

-7(n+7)+91=0

We multiply parentheses

-7n-49+91=0

We add all the numbers together, and all the variables

-7n+42=0

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

-7n=-42

n=-42/-7

n=+6

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