Bonjour
a. 2/5 x 3/4 = 6/20 = (2 x 3) /(2 x 10) = 3/10
b. 7/11 x 9/2 = 63/22
c. 6/19 x 15/7 = 90/133
d. 1/2 x 3/4 x 1/5 = 3/8 x 1/5 = 3/40
e. 3/8 x 7/10 x 1/5 = 21/80 x 1/5 = 21/400
