Răspuns :
a +b + c = 135;
a= c.12 + 1;
b = c.31 + 2;
(c.12 + 1)+ (c.31 + 2) + c = 135;
44c = 132;
c = 132:44 = 3;
a= 3.12 + 1 = 37;
b = 31.3 + 2 = 95;
Proba: 37 + 95 +3 = 135.
a+b+c=135, a:c= cat 12 rest 1 ⇒ a=12c+1 (teorema impartirii cu rest), b:c= cat 31 rest 2 ⇒
b=31c+2, inlocuim a si b in suma
12c+1+31c+2+c=135, 44c=135-3=132, c=132/44=3, a=3*12+1=36+1=37, b=31*3+2=93+2=95