Step-by-step explanation:
...........MaRk As BrAiNeSt
Answer:
55-5
50 books she has left
24ab-8ac
Assuming you want to simplify it.
Original equation: 8a(3b+6c-7c)
Apply 8a to each variable in the paranthesis: (8a)(3b)+(8a)(6c)+(8a)(-7c)
After multiplication: 24ab+48ac-56ac
Combine like terms: 24ab-8ac
6/8, 9/12
-3
