5 5
__ ÷ ____ =
9 9
The rule is first change the division to multiplication. Then switch the fraction.
It should look like this:
5 9 45
__ × __= ___
9 5 45
45/45 equal to 1. So the answer is 1.

emiliebozik1

my teacher taught be KFC- Keep Flip Change.
Keep the first number Flip the sign and Change the 2nd fraction to a reciprical-5/9=9/5 so its actually 5/9x9/5 which equals 45/45=1. hope that helps