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)?

It doesn’t show the question

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this

21/3 is the answer i believe