Question

Cercetati daca : ( x9x cu bara deasupra + x6 cu bara deasupra ) Ι 2(xx9 cu bara deasupra +8x cu bara deasupra +7 ) , unde x este cifra in baza 10.

Answer 1

$\overline{x9x}+\overline{x6}=100x+90+x+10x+6=111x+96$
$\overline{xx9}+\overline{8x}+7=100x+10x+9+80+x+7=111x+96$

=> 111x+96   divide 2(111x+96) -Adevarat