Question

daca a×b=249 si (a,b)=7, atunci determinati nr a si b

Answer 1

a×b=294
(a,b)=7
-----------------
a,b=?
=>a,b/7
294 descompus in factor primi = 294/2
                                                     147/3
                                                     49/7
                                                      7/7
                                                      1/
a=42=>b=7
a=7=>b=42
a=14=>b=21
a=21=>b=14