## anonymous one year ago I'll fan & medal!! Find the sum.

1. anonymous

$\frac{ 5 }{ xy } + \frac{ x ^{2} }{ y ^{2}}$

2. DanJS

you can only add fractions if they have the same bottom denominators, so need to do something , mulitply by the common denominator first...

3. anonymous

the common denominator is xy^2

4. DanJS

$[\frac{ 5 }{ xy }+\frac{ x^2 }{ y^2 }]*\frac{ xy^3 }{ xy^3 }$

5. anonymous

5x^2 is the numerator?

6. anonymous

|dw:1437497964405:dw|

7. DanJS

The common denominator is the product of the two, then multiply by that over itself, the same as multiplying by 1...

8. anonymous

i dont gt it

9. DanJS

$[\frac{ 5 }{ xy }+\frac{ x^2 }{ y^2 }]*\frac{ xy^3 }{ xy^3 } = \frac{ 5y^2 }{ xy^3 }+\frac{ x^3 y}{ xy^3 } =$

10. DanJS

now you can add them since they are both over xy^3