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Calculati media aritmetica a numerelor: a= 1/3 + 12/5 si b=2/3+3/5

Răspuns :

a=1/3+12/5
⇒a=5/15+36/15=41/15;
b=2/3+3/5
⇒b=10/15+9/15=19/15;
⇒[a+b]/2
⇒[41/15+19/15]/2
⇒[60/15]/2
⇒4/2=2;