a-b= 340; a:b= 4, rest 10-> a= 4b+10; 4b+10-b= 340-> 3b= 330-> b= 110-> a= 450
a-b=340 ; a;b= cat 4 rest 10, a=4b+10 (teorema impartirii cu rest), inlocuim pe a in diferenta numerelor
4b+10-b=340, 3b=340-10=330, b=330/3=110, a=340+110=450
