What's 25/75 in simplest form

You want to know whether the numerator (the first term) and the denominator (the second) can be divided by the same number.

Generally, if something has 5 at the end, we can divide it by 5, so that means we can divide it by 5, let's try:

25/5=5
75/5=15.

so then we have 5/15.

we can divide again:

5/5=1
15/5=3

So the final answer is 1/3.