Răspuns :
divizorii lui 8 sunt 1,2,4,8
x-2=1 x=3
x-2=2 x=4
x-2=4 x=6
x-2=8 x=10
x-2=1 x=3
x-2=2 x=4
x-2=4 x=6
x-2=8 x=10
Daca x∈Z atunci (x-2)/8⇒x-2∈D8⇒x-2∈{1;2;4;8} |+2⇒x∈{3;4;6;10}
Daca x∈N atunci x∈{3;4;6;10}.
Daca x∈N atunci x∈{3;4;6;10}.