JustAnotherFailure

Yeah, that was correct...thanks! 

Uh, I don't know why, but it said your answer was wrong. Here's the explanation they gave me:

Starting with the the rightmost column would be the easiest (we'll call it the first, the second rightmost column the second, and so on). Let's consider the possible values for E first.

Since the values must be non-zero, we'll start with 1. If E is 1, then S would be 1 and nothing would carry over. However, since H+H must equal E if nothing carries over and H must be an integer, E can not equal 1.

If E equals 2, then S must equal 4. H would then equal 1. This satisfies our original equation as shown.

I don't know what you did wrong, but hope that helps! Have a nice day :D

ahhh . . . sorry about the name! I suppose I can't change it now. Oops. 
First, @CalculatorUser thank you for recommending a video. I will try to work the problems. Also, Melody, I have not watched the video yet (I'm at school) but after I do, I will make sure to update you both. Thank you for helping me!
I'm sorry for the username (to be fair, I was argu-talking with my parents) and I will follow both your advice.

Again, thank you :)

First Melody, thank you for telling me what I did wrong. Like I said, I'm new to this site, and I thought I was following the rules properly but obviously I was not. I have now looked at the other answer and I will watch the youtube video. If I am still not able to figure it out, I will ask for further details. I'm sorry for posting both of the questions. I saw other people didn't post more than around 2 or 3 like a), b) in one question, so that's what I tried to do. However, I guess that was wrong. 

I understand that you are not here to do my homework for me, I was trying to find some advice, however, thank you for telling me the rules. I will leave this post up (how do you delete things anyway?) so maybe other people have a better grasp of the rules.

Anyway, I'm sorry, and thanks for telling me what I did wrong. Hope you have a good day! :D