Răspunsuri

2014-11-02T13:24:03+02:00
Adica 9ori 2=18
a)este 9.
b)este 3.


2014-11-02T13:28:52+02:00
A*b=18
1*18=18*1=18 ⇒ a=1, b=18 sau a=18 , b=1
2*9=9*2=18     ⇒ a=2 , b=9 sau a=9, b=2
3*6=6*3=18      ⇒a=3, b=6 sau a=6, b=3

a×b=18 a€{1,18,2,9,3,6} b€{18,1,9,2,6,3}