Afla nr a si b astfel incat:{3×[12+(6+2a+3b):5]-9}:6+15=21

Răspuns :

{3*[12+(6+2a+3b):5]-9}:6=6
3*[12+(6+2a+3b):5]=36
12+(6+2a+3b):5=12
12+(6+2a+3b)=60
6+2a+3b=48
2a+3b=42
a={0,6,10,14}
b={14,10,6,0}
DACA NUMERELE SUNT DIFERITE DE 0 ATUNCI a={6,10,14}, iar b={14,10,6}

COROANA?