Efectueaza:[12×5-(84:4-117:9)×5]:5

Răspuns :

[60-(21-13)*5]:5 = = (60 - 8*5):5 = = (60-40):5 = = 20:5 = = 4

[60-(21-13)×5]:5
(60-8×5):5
(60-40):5
20:5=4