a; b - numerele căutate.
a+b= 54,28
a= 3b
___________________
[tex]m_{a}[/tex]= ?
a= ?; b= ?
___________________
a+b= 54,28
3b+b= 54,28
4b= 54,28
b= 54,28:4
b= 13,57
a= 3b
a= 13,57·3
a= 40,71
[tex]m_{a}[/tex]= (a+b):2
[tex]m_{a}[/tex]= (13,57+40,71):2
[tex]m_{a}[/tex]= 54,28:2
[tex]m_{a}[/tex]= 27,14
\\weskizq
