Respuesta :

-3 < 2x + 1 < 7
-3 - 1 < 2x + 1 - 1 < 7 - 1
-4 < 2x < 6
-4/2 < 2/2x < 6/2
-2 < x < 3......this means ur numbers are between -2 and 3.....so ur numbers are -1,0,2 <==