(a) 2/7 x 4/4 = 8/28
Hence, & mnsq2 Can be replaced by 28.
(b) 5/8 x 2/2 = 10/16
Hence, & mnsq2 Can be replaced by 16.
(c) 3/5 x 4/4 = 12/20
Hence, & mnsq2 Can be replaced by 12.
(d) 15/20 x 3/3 = 45/60
Hence, & mnsq2 Can be replaced by 20.
(e) 3/4 x 6/6 = 18/24
Hence, & mnsq2 Can be replaced by 3.