The equation to represent the amount of apple left is 20 - ( 8 + 6 + 3 ) pounds.
Step-by-step explanation:
Number of apples = 20 pounds
2 batches of apple sauce uses 4 pounds each of apples
So,
amount of apples used in apple sauce = 2 X 4 pounds
= 8 pounds
1 batch of apple butter uses 6 pounds of apples
Apple juice requires 3 pounds of apples
Amount of apple left = 20 - ( 8 + 6 + 3 ) pounds
= 3 pounds
Amount of apple left is 3 pounds
Therefore, the equation to represent the amount of apple left is 20 - ( 8 + 6 + 3 ) pounds.