-21=n+(-30)

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Solution for -21=n+(-30) equation:



-21=n+(-30)
We move all terms to the left:
-21-(n+(-30))=0
We calculate terms in parentheses: -(n+(-30)), so:
n+(-30)
We add all the numbers together, and all the variables
n-30
Back to the equation:
-(n-30)
We get rid of parentheses
-n+30-21=0
We add all the numbers together, and all the variables
-1n+9=0
We move all terms containing n to the left, all other terms to the right
-n=-9
n=-9/-1
n=+9

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