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I will answer your question as soon as you will submit the equation correctly.
The equation presented in the post now is incorrect.
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Comment from student: I literally copied and pasted.....your not terribly helpful are you?
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My response: Do you see that sign "-" in the left side immediately before the "=" sign ?
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My extended response:
1. It is your responsibility/duty/commitment to provide a correct input
You failed to do it. It is your first fault.
2. I pointed to you that your post was incorrect.
It was your responsibility/duty/commitment to find the error and to fix it.
Again: it was your duty to say "thanks" and to do the rest.
You failed to do it.
It is your second fault.
3. Instead, you start generate your notices and express your opinion.
It is not your function in this process.
Your function is to create the correct input and to maintain correct communication.
You failed to do it. It is your third fault.
4. Let me say you that you incorrectly understand your functioning role.
You think that copy and past is all that you need to do.
Actually, it is not so. Your role is to provide a correct input.
If you can not provide it, and since you can not provide it, it means that you do not perform your role properly.
And it is your fourth fault.
5. And couple of advises in conclusion.
a) The tutor is always right.
b) When communicate with a tutor, start your communications saying "Thanks . . . "
c) Do not hurry to express your opinion. It may be wrong . . .