10n+9=-21

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Solution for 10n+9=-21 equation:


10n+9=-21

We simplify the equation to the form, which is simple to understand 
10n+9=-21

We move all terms containing n to the left and all other terms to the right. 
+10n=-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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