Question

Calculati media aritmetica a numerelor a si b stiind ca a= 5 supra 3 - 3 supra 7 si b= 1 supra 3 + 3supra 7

Answer 1

$a= \frac{5}{3} - \frac{3}{7} = \frac{26}{21}$
$b= \frac{1}{3} + \frac{3}{7} = \frac{16}{21} ;$
$Media aritmetica=a+b:2$
$Media aritmetica= \frac{ \frac{42}{21} }{2} =1$