Question

Calculează media generala a 4supra21si 7supra3​

Answer 1

$\huge = \frac{ \frac{4}{21} + { }^{7)} \frac{7}{3} }{2} = \frac{ \frac{4}{21} + \frac{49}{21} }{2} = \\ \\ \huge= \frac{ \frac{4 + 49}{21} }{2} = \frac{51}{21 \times 2} = \frac{51}{42}$