Question

Aflati numerele naturale x si y ,stiind ca (x-5)(Y-2)=21 VA ROG URGENT

Answer 1

(x-5)(y-2)=21

21=1×21

x-5=1  x=6
y-2=21  y=23

x-5=21  x=26
y-2=1  y=3

21=3×7

x-5=7  x=12
y-2=3  y=5

x-5=3    x=8
y-2=7    y=9