in cazul in care rezultatul este8445 100×a+100×b+10×c+3+1000+100×a+10×b+c+1000a+100×b+10xc+5000+100a+10×b+c=8445 2200×a+220×b+22c+6003=8445 2(1100a+11×b+11×c)=8445-6003=2442 11(100×a+10×b+c)=2442:2=1221 abc=1221:11=111 verificare ÷1113+1111+1110+5111=8445
