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Va rog frumos ajutati-ma.Multumesc.

Fie a= 1/3 - 15/24 : 25/8
b=0.25 + o.(3) : 5/3
Calculati media aritmetica a numerelor a si b.ofer 30 puncte.Multumesc :)


Răspuns :

a= 1/3 - 15/24 : 25/8 =1/3 -5/8 :25/8=1/3 -5/8 x8/25=1/3 -1/5=2/15

b=0.25 + o.(3) : 5/3= 1/4 +3/9 x3/5=1/4 +1/5=9/20

(a+b)/2=(2/15 +9/20)/2=(8/60 +27/60)/2=(35/60)/2=(7/12)/2=7/24

(a+b)/2=7/24