I need someone to check and go over my answers to make sure they are correct and if not could you go over them with my on why and how to solve correctly??

Thank you much appreciated..

Add.

-4/5 + (9/20) = 5/25

1 + (-2) + 3 + (-4) = 10

5/3 + (-4/3) + 5/3 = 6/3

the last one is correct.

The first one, change to common denominator..

-16/20 + 9/20 = ?

The second, gather like terms...
4-6=?

first problem is = 1/5

second problem is = 2

and the third one is 6/2 would it be 6/3 or do I have to change it to 2? since 6 divided by 3 is 2?

Sure, I'd be happy to check your answers and explain any mistakes.

1) -4/5 + (9/20) = 5/25
To add fractions, we need a common denominator. In this case, that would be 20. Let's convert -4/5 to have a denominator of 20:
-4/5 * 4/4 = -16/20
Now we can add the fractions:
-16/20 + 9/20 = -7/20
So the correct answer is -7/20, not 5/25.

2) 1 + (-2) + 3 + (-4) = 10
When adding positive and negative numbers, we can think of it as combining or cancelling out values. Let's add the numbers step by step:
1 + (-2) = -1
-1 + 3 = 2
2 + (-4) = -2
So the correct answer is -2, not 10.

3) 5/3 + (-4/3) + 5/3 = 6/3
In this case, the denominators of the fractions are already the same, so we can simply add the numerators:
5 + (-4) + 5 = 6
The denominator remains the same, which is 3.
So the correct answer is 6/3, which can be simplified to 2.

I hope this helps clarify the mistakes and how to solve the problems correctly! Let me know if you have any other questions.