So the first fraction is:
1)

So we have to find a number that is multiple of 20 and 5, in this case is the number 5. the we have to divide the two numbers in 5:

So at the end the fraction is going to be equal to:

2)

and 12 and 96 are multiples of two, so we can divide by 2

now we need to find other number that is multiple of 6 and 48, and agins is the number 2:

Now 3 and 24 are multiples of 3, so we make the same procedure:

So at the end is going to be:

3)

100 and 2 are multiples of 2, so we divide them by 2:

So the final Resold will be:
