The rule is division since the number is being divided by 5 repeatedly
If you are using half as much milk every day, you'll never run out because you'll just keep using half as much. You still won't run out with the coffee shop problem or the refrigerator problem.
21/25 is already a fraction and if you wanted it to be simplified, its already simplified to be 21/25.
Mx-ymx-y
m=5m=5
x=3x=3
y=8y=8
So... They all have to be 0 otherwise they are false so...
Hope this helps :)
