a+b+c=119
a-b =19 => a = b + 19
b-c = 9 =>b=c+9
________________________
a,b,c=?
Rezolvare
a -------
b ------- 19 } 119
c -------- 19 9
1)Egalam segmentele
119-19 -19-9=72 3a
2)a=?
72÷3=24 (a)
3)b=?
24+19=43 (b)
4)c=?
43+9=52 (c)
R:24=a 43=b 52=c
V:24+
43
52
___
119
