Answer:
15
Step-by-step explanation:


Subtract.

Now, add.

Apply absolute rule.

= 15
Answer:
180 CDs
Step-by-step explanation:
So if Sam has 84 CDs, and the ratio from Sam to Alice is 7:8, we can do 84/7=12 so each number is equal to 12. Then we add up 7 and 8 and get 15, so we do 15*12 and we get 180.
Answer:
x=9/2
Step-by-step explanation:
Answer: 6 39/80
Step-by-step explanation: