Algebraic division question

1. Oct 29, 2011

fran1942

Hello, I can't understand where the '2' came from in this equation.

5x^2y / 10xy^3
=
x/2y^2

I can see how the other values were calculated but the '2' before the y^2 is puzzling me.
Thanks for any clarification.

2. Oct 29, 2011

ArcanaNoir

5/10=1/2

3. Oct 30, 2011

bubokribuck

$5x^2y$ and $10xy^3$ both have a common factor $5xy$. Try factorising now.