3a5a+a8a6=11633
3a5a=3×1000+a×100+5×10+a
= 3000+100a+50+a
= 3050 + 101a
a8a6=a×1000+8×100+a×10+6
= 1000a+800+10a+6
= 1010a + 806
Revenim la suma initiala:
3050+101a+1010a+806=11633
1111a+3856=11633
1111a=11633-3856
1111a=7777
a=7777÷1111
a=7
Deci numerele cautate sunt: 3757 si 7876.
