It is: 9 and 10
90/126 is 5/7 in its lowest terms
90/98 in lowest terms is 45/49
90/100 = 9/10
3/20
90/35 = 18/7
7 / 30
The simplest form for 81 over 90 is 9/10
Both numbers divide by 9 to give 7/10
90 over 95 in lowest terms is 18/19
84 over 90 in the lowest terms is 14/15
There is no whole number - 81/90 in its simplest form is 9/10 !