-9=n-21

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Solution for -9=n-21 equation:


-9=n-21

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

We move all terms containing n to the left and all other terms to the right. 
-1n=-21+9

We simplify left and right side of the equation. 
-1n=-12

We divide both sides of the equation by -01 to get n. 
n=12

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