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Ajutor va rog la 57


Ajutor Va Rog La 57 class=

Răspuns :

a) {[271*3-105*7]*9-340:2}:2 =

{[813-735]*9-170}:2 =

{78*9-170}:2 =

{702-170}:2 = 532:2 = 266

b) {[(120:6*10:5+60):10+590]-300}-102 =

{[(20*10:5+60):10+590]-300}-102 =

{[(200:5+60):10+590]-300}-102=

{[(40+60):10+590]-300}-102 =

{[100:10+590]-300}-102 =

{600-300}-102 = 300-102 = 198