Răspunsuri

2014-08-11T11:20:51+03:00
A+b+c+d+e/5=11/4
4x(a+b+c+d+e)=55
a+b+c+d+e=55/4

2014-08-11T11:25:25+03:00
Ma = a+a1+a2+a3+a4 =  \frac{11}{4}  
Aflati suma: 
 11:4 = 2,75 ( media )

Aflam suma :
2,75 · 5= 13, 75