I need help with all possible questions such as subtracting, dividing, and multiplying.

It depends on what you are adding together.

For example: 3 + (-2) = 1 since this can be thought of as: 3 - 2 = 1.

Another example: 2 + (-3) = -1, we can use the same logic to think of this as: 2 - 3 = -1

Do books use number lines anymore. If you do it with a number line in front of you, this should make sense - adding is going to the right on the line.

To answer the question regading multiplication and division:

a. positive times positive = positive
b. positive times negative = negative
c. negative times positive = negative
d. negative times negative = positive

From this you can see that the following is true:

a. positivie divided by positive = positive
b. positive divided by negative = negative
c. Negative divided by positive = negative
d. Negative divided by negative = positive.

thanks you guys for the answers and stuff cause I'm in 9th grade and I have to do matrices with integers and fractions together so its really irritating

You mean what's a number line? They seriously don't teach that in school anymore? No wonder people are so lost on that kind of stuff -- they don't teach visuals anymore. We can make pictures of math and it's way easier to understand, but no one ever does it anymore.

I was just talking about the examples yesbeckjs did, and nothing to do with matrices. (Matrices in 9th grade seems a little on the advanced side.)