Răspuns :
a+b+c=82
a+b=65 => a=65-b
b+c=56 => c=56-b
65-b+b+56-b=82
121-b=82
-b=82-121
-b=-39 |(-1)
b=39
a=65-39=26
c=56-39=17
39+26+17=82
a+b+c=82
a+b=65 => a=65-b
b+c=56 => c=56-b
65-b+b+56-b=82
121-b=82
-b=82-121
-b=-39 |(-1)
b=39
a=65-39=26
c=56-39=17
39+26+17=82