4. Se stie cat
a=0x40x0+21
b=64 6x45x2
P = 88 7x7
Ana aloxa

Răspuns:
a = 0+21=21, b = 64-24 +10 =50, c=64-49 =15
a+bxc = 21 +50x15 =21 +750 =771