Oh honey, 2 over 36 is as simple as it gets - it's 1 over 18. Just divide both numbers by 2 and you're left with the simplest form. Math doesn't have to be complicated, just like my love life in my 90s.
2 over 9
72/36 = 2/1 = 2
24/36 = 2/3
2/9
2/3
2/5
1/2
2/5
2/5
2 over 3
The simplest form for the fraction 72/98 is 36/49 (The GCF is 2)
-1/2 because 72 is 2 times 36