Verified answer

"ه" is the equivalent of ''h'' in english alphabet and they are pronounced the same way

''kh'' is replaced by the number ''5'' when writing in english letters it has no equivalent in the english alphabet but in the arabic alphabet it is the letter "خ"

and for ''7'' it has no equivalent in the english alphabet too ... it replaces to letter "ح" in arabic alphabet

hope i made it a little clear ...

7 is like the sound of snakes

kh or 7' is a different letter..and it is not there in english.

the ه is like \h\ sound in english.