I hope someone out there enjoys my Math poems.

It took me about 10 minutes to figure out this
set of equations.

If you take the odd numbers from the set 0 - 9

and subtract the even numbers you are left with 11,111
  which is a series of 5 ones, ( 5 is the number of odds and the number of evens on each side of the equation.)

13579 - 02468= 11111

Then you drop one odd

and one even to get a 4 series:

1357 - 0246 = 1111

Then another like so:

135 - 024 = 111

And as before:

13 - 02= 11

And finally you are left with the last odd which is one
and the last even which is 0 and you get:

1 - 0 =1