This is all about factorising.
Firstly yo have to find the biggest number that will go into both 15 and 75.
15 goes into both 15 and 75.
Divide both numbers by 15, (15/15=1) (75/15=5)
Therefore the ratio in its lowest terms is 1:5
If you can not recognise that 15 is the highest common factor straight off then look for smaller ones each time.
e.g.
divide by 5. Ratio = 3:15
divide new ration by 3. Ratio = 1:5
1/5
75% in lowest terms is 3/4
2/3
75
To simplify the ratio of 75 to 20, you can divide both numbers by their greatest common factor, which is 5. This gives you 75 divided by 5 equals 15, and 20 divided by 5 equals 4. Therefore, the ratio of 75 to 20 in simplest form is 15:4.
1/5
25 to 1
In its lowest terms 75 and 5 is 15 and 1
1 to 3
1/5
11/15
225/75 is 3/1 in its lowest terms
75 over 21 in lowest terms = 25/7
45 over 75 in lowest terms is 3/5
-20
Write 0.75 in lowest terms..75 in lowest terms is: 3/4.
1575 is an integer and so there is no further simplification.