-1/3(n+15)=-21

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Solution for -1/3(n+15)=-21 equation: 



-1/3(n+15)=-21

We move all terms to the left:

-1/3(n+15)-(-21)=0



Domain of the equation: 3(n+15)!=0

n∈R



We add all the numbers together, and all the variables

-1/3(n+15)+21=0

We multiply all the terms by the denominator


21*3(n+15)-1=0

Wy multiply elements

63n(n-1=0

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