6/(s+9)=4/(s+12)

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Solution for 6/(s+9)=4/(s+12) equation: 



6/(s+9)=4/(s+12)

We move all terms to the left:

6/(s+9)-(4/(s+12))=0



Domain of the equation: (s+9)!=0

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

s!=-9

s∈R





Domain of the equation: (s+12))!=0

s∈R



We calculate fractions


6s/((s+9)*(s+12)))+(-(4*(s+9))/((s+9)*(s+12)))=0



We calculate terms in parentheses: -(4*(s+9))/((s+9)*(s+12))), so:

4*(s+9))/((s+9)*(s+12))

We multiply all the terms by the denominator


4*(s+9))

We multiply parentheses

4s+

We add all the numbers together, and all the variables

4s

Back to the equation:

-(4s)



We add all the numbers together, and all the variables

-4s+6s/((s+9)*(s+12)))+(=0

We multiply all the terms by the denominator


-4s*((s+9)*(s+12)))+(+6s=0

We add all the numbers together, and all the variables

6s-4s*((s+9)*(s+12)))+(=0

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