9/2 28/25 68/68 4/4 28/27
Их делить надо тоесть
9/2=4 1/2
28/25= 1 3/25
68/68=1
4/4=1
28/27=1 1/27
(12/53+41/53)-р=17/26
53/53-р=17/26
1-р=17/26
1-17/26=р
26/26-17/26=р
р=9/26
AB = 16.7
BC = 16.7-8.27
BC= 8.43
CA= 8.43+1.88
CA= 10.31
P = 16.7+8.43+10.31
P = 35.44 m