Question

Calculati media aritmetica a numerelor a si b ,stind ca a=5supra3 - 3supra7 si b=1supra3+3supra7

Answer 1

a=5/3-3/7=(5x7-3x3)(3x7)=(35-9)/21=26/21
b=1/3+3/7=(7+9)/21=16/21
Ma=(a+b)/2=(26/21+16/21)/2=(42/21)/2=2/2=1

Answer 2

ma=$(\frac{5}{3} - \frac{3}{7} + \frac{1}{3} + \frac{3}{7 }):2= \frac{6}{3} :2=2:2=1$