a=896:7 a=128
a+b+c=223 b+c=223-128 b+c=105
c ----------
b ---------- ------------- -------------- -------------- -------------- ----------- ----------- ---------- ---------- ----
b=cx9+5 1.Egalam partile: 105-5=100
2. Cat este c? 100:10=10
3.Cat este b? 10x9+5 =95