As for this first part I'm confused over what you are doing. You have no columns so I cannot see what's a debit and what's a credit. You can make columns when you type, but they do not show up when you post. When you "quote post" the columns show up again in the typing screen. So I can see that you never even attempted to do columns. (Not that it works correctly, but you never even attempted it. The best idea is writing (dr) or (cr) before or after each line.)
Date Account Names & Explanations Debits Credits
Aug. 1 Cash 7500
Photography Equipment 32,500
Capital 40,000
Owner contributes 7500 in cash
And 32,500 in photo equipment
Aug. 1 Prepaid insurance 3000
Paid Prepaid insurance 3000
Aug. 5 Account Payable 1400
Purchased office supplies 1400
Aug. 20 Account Receivable 2650
Cash earned in Photo
Fees 2650
Aug. 31 Expenses 875
August Utilities 875
T-Account
Debit
Investment cash 7500
Photography Equipment 32,500
Photography fee earned 1650
Credit
Insurance 3000
Office supplies 1400
Utilities 875
There are several things listed where you have listed only one account. Which tells me you do not understand what a journal entry even is. You should have learned in the first chapter how all of these things affect the accounting equation, and how that has to remain equal at all times. The only way it can remain equal is if there are at least two accounts involved. If you only affect one account, it's not balanced with something else.
When you get to debits & credits, this balancing is accomplished by every entry having equal debits and credits - if that is to happen, there have to be at least two accounts. Three or more can be used, as long as both sides are equal. I don't see you even trying to use "sides" at all.
This means we are starting back at the very beginning. If we were to start at the beginning, this would entail about two chapters' worth of explanation and no one can do that in a forum situation. There is an online textbook here:
Principles of Accounting: Chapter One
I would suggest just starting at the beginning and reading. You can certainly skip over all the stuff about what is accounting, what jobs you can get and all that. But you need to know your accounting equation, and how that equation is affected by transactions, and understand the equality of the equation. Then how that translates into debits and credits. You're going to have to get more specific if you have questions.
But just as example in what you're done here: The first looks to be right, but since it's not in columns I really don't know if you have everything in the proper place. The one with the insurance - you've used the prepaid insurance account, but there's no other half of that entry. What about the "paid" part? What do you pay with? The one about purchasing office supplies -- now that one you haven't even included all the necessary information. Purchased how? You've used accounts payable, which is a proper account if it says the supplies were purchased on account. But you haven't included that part. And what about the supplies themselves. Where'd they go? They have to be recorded as well. Again, you only have one account. Etc.
As for the two little sections at the bottom of that, I don't know what you're trying to do there.
Shelton Engineering completed the following transactions in the month of June.
As for this second one, this is an entirely different problem. It's easier if you don't have two entirely different problems in one thread, especially when one is very long. That gets very confusing when you have posts going back and forth. Second, we don't do people's homework here. You should never post just a problem, with no work submitted (or attempts at work) and no question about it.
But you need to spend some time going over the online textbook, or going back through your textbook. You're welcome to come ask specific questions, but it's just impossible to explain everything about doing journal entries in a forum like this - it's just too involved and broad a topic.