Question

Aflati numerele naturale x si y , stiind ca: (x-3)(y+4) = 12.

Answer 1

$\left \{ {{x-3=1} \atop {y+4=12}} \right. =>x=4,y=8$

$\left \{ {{x-3=3} \atop {y+4=4}} \right. =>x=6,y=0$

$\left \{ {{x-3=2} \atop {y+4=6}} \right. =>x=5,y=2$