90
15
41/2 - 21/3 = 43/6 - 22/6 = 21/6
6
1 and 4 fifths divided by 1 third = 52/5
8 and 1 third divided by 3 = 27/9
One third divided by two and one third = 1/7
4 divided buy 1 third simplified = 4
2 and 1 third divided by 1 half equals = 42/3
1/2 divided by 1/3 is 1/6
Three eighths divided by 1 and one third = 9/32
1