1) 13:3
2) Same
3) 49:12
4) 95:14
5) 82:13
6) 7:8
7) 9:2
8) 29:5
9) Same
10) 10:13
Your basically dividing them by each other on a calculator
E.g. 90 ÷117 = 10/13
(10:13)
Or
20:30
20÷30=2/3
(2:3)
So, you could find the HCF of both numbers.
( highest factor of 20 & 30 is 10)
Hope this helps!
