Answer:
- 7
Step-by-step explanation:
21 = - 4x - 7
- 4x - 7 = 21
- 4x = 21 + 7
- 4x = 28
x = 28 / - 4
x = - 7
7
pq - r/4
(-8)(-3) - 68/4
-8 x -3 = 24 (2 negatives equal a positive)
24 - 68/4
68/4 = 17
24-17 = 7
b