4/
a) 16/15 x3 1/8 = 16/15 x (3x8+1)/8 = 16/15 x 25/8 = 2x5/3 = 10/3
b)1 1/8 x 16/27 = 9/8 x 16/27 =2/3
c) 10/21 x1 2/5 = 10/21 x 7/5 =2/3
d) 2/5 x (-25/4) = -5/2
e) (-8/3) x 27/16 = -9/2
f) 16/25 x (-5/2) = -8/5
g) 28/9 x 3/8 = 7/6
h) 8/7 x 35/16 = 5/2
i)40/9 x 3/8 =5/3
