I am sorry but I didn't show my working
L.C.M =
a) 45 & 30 = 90
b) 120 & 90= 120
c) 140 & 112= 560
d) 60 & 15 = 60
e) 55 & 105 = 1,155
f) 72 & 64 = 576
g) 12 & 27 = 108
h) 14 & 42 = 42.
H.C.F =
a) 45 & 30 = 15
b) 120 & 90= 30
c) 140 & 112= 28
d) 60 & 15 = 15
e) 55 & 105 = 5
f) 72 & 64 = 8
g) 12 & 27 = 3
h) 14 & 42 = 14.
DONE..
