Răspuns :
a=b-93 => 172-93 =79
b=172
c=a+b => 79+172 = 251
a= 79
b= 251
a+b+c = 79+172+251 = 251 + 251 = 502
b=172
c=a+b => 79+172 = 251
a= 79
b= 251
a+b+c = 79+172+251 = 251 + 251 = 502