A) 10000cl:100:5-2000 dl:10:10
=100 l:5-200 l:10
=20 l-20 l
=0 l
4500 cl x10-4000 ml
=45000 ml-4000 ml
=41000 ml
B) (8x10 hl:10+6x100 dal:100):7
=(8 kl+6kl):7
=14 kl:7
=2 kl
[7 klx10+(4x550 dal:10-20hl)]:9
=[70 hl+(220 hl-20 hl)] :9
=(70 hl+200 hl) :9
=270 hl :9
=30 hl