Va rog repede 33+coronita

Răspuns:
5/4 • 15/100 - 1/3 • 9/10 + 25/90 • 18/100 =
5/4 • 3/20 - 3/10 + 5/18 • 9/50 =
3/16 - 3/10 + 1/20 =
Numitor comun 80
(15-24+4)/80 =
-5/80 =
-1/16