3n+9=-7(n+3)

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Solution for 3n+9=-7(n+3) equation:


3n+9=-7(n+3)

We simplify the equation to the form, which is simple to understand 
3n+9=-7(n+3)

Reorder the terms in parentheses
3n+9=+(-7n-21)

Remove unnecessary parentheses
+3n+9=-7n-21

We move all terms containing n to the left and all other terms to the right. 
+3n+7n=-21-9

We simplify left and right side of the equation. 
+10n=-30

We divide both sides of the equation by 10 to get n. 
n=-3

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