Question

1. What happened when you had a negative plus a negative, (-a) + (-b)?

2. What happened when you had a positive plus a negative, a + (-b)?

***Is this the same as a positive minus a positive, a – b?

3. What happened when you had a positive minus a negative, a - (-b)?

4. What happened when you had a negative minus a negative, (-a) - (-b)?

Answer 1

1. Add numbers and sign negative.

`( - 2) + ( - 1) = - 3`

2. Subtract numbers and the sign of the large number .

**yes

`2 + ( - 1) = 2 - 1 = 1`

`1 + ( - 2) = 1 - 2 = - 1`

3. Negative in the negative is positive, the addition of numbers and the sign is positive .

`1 - ( - 2) = 1 + 2 = 3`

4. A negative (a) and a negative (b) in a negative is a positive, and we subtract the numbers and the sign of the large number.

`( - 1) - ( - 2) = - 1 + 2 = 1 \\ \\ ( - 2) - ( - 1) = - 2 + 1 = - 1`

I hope I helped you^_^