Answer:7/12
Step-by-step explanation:You first do 23/12-16=a. So you do 23-16=7 and since your subtracting from a fraction.7/12
If she has 6 yards and each pillow required 1 yard she can make 6 pillows
12(6) + 30(3)
= 72 + 90
= 162
The answer is 21.5 or in a fraction its 43/2