Answer:
77/84
Step-by-step explanation:
84 ÷ 12 = 7
Multiply the numerator and denominator by 7

Answer:
the answer is 31 that the costumers regularly buy that's why it left 20
Answer:
7) -3
8) B
Step-by-step explanation:
Answer: LAST OPTION.
Step-by-step explanation:
1. You have the following equation:

2. Then you must solve for x, as following:

Therefore, as you can see above, the answer for the exercise is the last option.