84 over 90 in the lowest terms is 14/15
Both 84 and 120 are products of 12. If you divide 84 by 12, you get 7 and if you divide 120 by 12 you get 10. Therefore 84/120 = 7/10.
84/114 = 14/19
84/252 = 1/3
4/7
14/15
3/4
It is 27/14
6 over 7. (divide by two, then by two, then by three)
24/84 = 2/7 in its lowest terms
3/7
42/43