Question

Aflati toate numerele naturale care impartite la 4 dau catul 7.

Answer 1

x:4=7 rest R , dar R<4 => R={0,1,2,3}

Daca R=0 =>x=7x4+0=28+0=28
Daca R=1 =>x=7x4+1=28+1=29
Daca R=2 =>x=7x4+2=28+2=30
Daca R=3 =>x=7x4+3=28+3=31

=> x={28,29,30,31}


Sper ca te-am ajutat ! :)