Răspuns :
(a+b+c):3=2,43
(x+y):2=3,32
(a+b+c+x+y):5=?
(a+b+c) :3=2,43
(a+b+c)= 7,29
(x+y):2=3,32
x+y= 6,64
( a+b+c+x+y):5= (7,29+6,64):5= 13,93:5= 2,786
(x+y):2=3,32
(a+b+c+x+y):5=?
(a+b+c) :3=2,43
(a+b+c)= 7,29
(x+y):2=3,32
x+y= 6,64
( a+b+c+x+y):5= (7,29+6,64):5= 13,93:5= 2,786