Răspunsuri

2014-01-07T22:37:09+02:00
Notam nr consecutive cu

a, a+1, a+2

deci

(a+a+1+a+2):5=8,3 deci avem (3a+3):5=8,3 => 3a+3=8x5+3. deci 3a+3=43. 3a=40, 

deci a =13.33, b=13.33+1 => b=14.33 si c=15.33.