4/n+9=5/n+12

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Solution for 4/n+9=5/n+12 equation: 



4/n+9=5/n+12

We move all terms to the left:

4/n+9-(5/n+12)=0



Domain of the equation: n!=0

n∈R





Domain of the equation: n+12)!=0

n∈R



We get rid of parentheses

4/n-5/n-12+9=0

We multiply all the terms by the denominator


-12*n+9*n+4-5=0

We add all the numbers together, and all the variables

-3n-1=0

We move all terms containing n to the left, all other terms to the right

-3n=1

n=1/-3

n=-1/3

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