Question

Aflati nr nat x, stiind ca media aritmetica a numerelor 36 si x este 137

Answer 1

[tex]m_a= \frac{36+x}{2} \\ \frac{36+x}{2}=137|*2 \\ 36+x=274 \\ x=274-36 \\ \boxed{x=238}[/tex]

Answer 2

$\frac{36+x}{2}$ = 137
36+x=137*2 ⇒ 36+x=274 ⇒x=274-36 ⇒x=238
Verificare :36+238 / 2=137