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afla suma numerelor40si 10;30 si20;10 si70;80 si20

Răspuns :

40 + 10 = 50
30 + 20 = 50
20 + 10 = 30
10 + 70 = 80
80 + 20 = 100

40+10=50/30+20=50/10+70=80/80+20=100