You will need to find a "common factor" of the two numbers on a fraction. If it's a huge and awkward number to manage with, then you will need to look into methods of finding the common factors, but for now let's just look at more basic examples.
210/270
Firstly we can easily see both numbers contain the factor 10 (This is actually the factors 2 and 5 together)
We divide both numbers by this known factor.
(210 / 10) / (270 / 10) = 21/27
Now we can see both numbers contain the factor 3
Again, divide this out of them.
(21/3) / (27/3) = 7/9
You keep finding factors of the two numbers until either one is a prime number, or neither number shares a common factor. If you are stuck and are on two non-primes, then quickly try to think of all the factors of one of the numbers, and see if any of those are in the other number. If not, you have reached it's simplist form.
You will need to find a "common factor" of the two numbers on a fraction. If it's a huge and awkward number to manage with, then you will need to look into methods of finding the common factors, but for now let's just look at more basic examples.
210/270
Firstly we can easily see both numbers contain the factor 10 (This is actually the factors 2 and 5 together)
We divide both numbers by this known factor.
(210 / 10) / (270 / 10) = 21/27
Now we can see both numbers contain the factor 3
Again, divide this out of them.
(21/3) / (27/3) = 7/9
You keep finding factors of the two numbers until either one is a prime number, or neither number shares a common factor. If you are stuck and are on two non-primes, then quickly try to think of all the factors of one of the numbers, and see if any of those are in the other number. If not, you have reached it's simplist form.
