Daje najjjjjjjjjjjjj mam to do 18.00 licze na cb

Odpowiedź:
(7/10-1)•(5 1/3-4,5)/2 1/4=-3/10•(5 1/3-4 5/10)/9/4=
=-3/10•(5 1/3-4 1/2)•4/9=-3/10•4•(5 2/6-4 3/6)/9=
=-6/5•(4 8/6-4 3/6)/9=-6/5•5/6/9=-1/9