Question

sa se afle numerele naturale a si b nelule stind ca a-b=2 a+b=24 calculati media aritmetica a numerelor a si b

Answer 1

$a-b=2 \\ a+b=24 \\ ======= \ \ (+) \\\\ 2a + /=26 \\\\ \boxed{a=\frac{26}{2}\to 13} \\\\ b=24-13 \\\\ \boxed{b=11 } \\\\\\ ma=\frac{a+b}{2} \\\\ ma=\frac{24}{2} \\\\ \underline{ma=12}$

Answer 2

a+b=24
a-b=2
a=b+2
b+2+b=24
2b=24-2
2b=22
b=22:2
b=11
a=24-11
a=13
$m_a=\frac{a+b}{2}=\frac{24}{2}=12$