Răspuns :
51:cx8=136
51:c=136:8
51:c=17
c=51:17
c=3
8×p÷4=16×5
8×p÷4=80
8xp=80x4
8xp=320
p=320:8
p=40
51:c=136:8
51:c=17
c=51:17
c=3
8×p÷4=16×5
8×p÷4=80
8xp=80x4
8xp=320
p=320:8
p=40