4(1)If H is a normal subgroup of G, then Hg= gH for Wg∈G (2)H is a subgroup of g. .3)Hg=gH, it does not imply hg=gh. ◆(4)IfHg=gH, then there exists h'∈ H such that hg= gh' for vh∈H (1) If H is a normal subgroup of G, then Hg=gH for gG  (2)H is a subgroup of G.  (3)Hg=gH, it does not imply hg=gh.  (4) If Hg=gH, then there exists h'H such that hg=gh' for hH