Step-by-step explanation:
-28÷4=2
-7=2
= -7-2
= -9 is the correct answer..
Answer:

General Formulas and Concepts:
<u>Pre-Algebra I</u>
- Order of Operations: BPEMDAS
<u>Algebra I</u>
- Midpoint Formula:

Step-by-step explanation:
<u>Step 1: Define</u>
R (9, 3)
S (-1, -9)
<u>Step 2: Find midpoint</u>
- Substitute:

- Subtract:

- Divide:

Am I suppose to be looking at a picture?
2 + 1 = 3
3 - 3 = 0
Hope this helped :)