Question

Aflati media aritmetica a numerelor:
a) $\frac{1}{6}$;$\frac{2}{9}$;$\frac{3}{4}$
b)$\frac{3}{7}$;$\frac{1}{5}$;2;6.
c) 1,(5); 0,1(5); 1,5

Answer 1

(++)=(6+4+9):36=19/36/3=19/108
2.
(++2+6):4=(15+7+70+210)/35/4=302/35*4=302/140=151/70
3.
(14/9+14/90+15/10)/3=(140+14+135)/90/3=289/90/3=289/270