Final answer:
To solve for j, we can use the given information that each box contains 7 shirts and j jackets, and there are a total of 6 boxes. Therefore, the total number of shirts is 6 * 7 = 42. Since there are 60 pieces of clothing in total, we can subtract the number of shirts from the total to find the number of jackets: 60 - 42 = 18 jackets.
Step-by-step explanation:
To solve for j, we can use the given information that each box contains 7 shirts and j jackets, and there are a total of 6 boxes. Therefore, the total number of shirts is 6 * 7 = 42. Since there are 60 pieces of clothing in total, we can subtract the number of shirts from the total to find the number of jackets: 60 - 42 = 18 jackets. Therefore, j = 18.