Question

media aritmetica a doua numere este egala cu 20. Care este suma numerelor?

Answer 1

$M_a= \frac{a+b}{2} =\ \textgreater \ 20= \frac{a+b}{2} =\ \textgreater \ a+b=20*2=\ \textgreater \ a+b=40$

Answer 2

(a+b):2=20 a+b=20×2 a+b=40