7n=(-n)2-18

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Solution for 7n=(-n)2-18 equation: 



7n=(-n)2-18

We move all terms to the left:

7n-((-n)2-18)=0

We add all the numbers together, and all the variables

7n-((-1n)2-18)=0



We calculate terms in parentheses: -((-1n)2-18), so:

(-1n)2-18

We multiply parentheses

-2n-18

Back to the equation:

-(-2n-18)



We get rid of parentheses

7n+2n+18=0

We add all the numbers together, and all the variables

9n+18=0

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

9n=-18

n=-18/9

n=-2

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