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Efectueaza: [12x5-(84:4-117:9)x5]:5
Dau coroana! Repede va rog!


Răspuns :

[12x5-(84:4-117:9)x5]:5=
[12x5-(21-13)x5]:5=
[12x5-8x5]:5=
(60-40):5=
=20:5=
=4