3×(4h15min-2h42min÷6+7h17min)

To solve this expression, let's break it down step by step:

Step 1: Convert the hours and minutes into a common unit, such as minutes.

• 4 hours and 15 minutes = 4 × 60 + 15 = 255 minutes
• 2 hours and 42 minutes = 2 × 60 + 42 = 162 minutes
• 7 hours and 17 minutes = 7 × 60 + 17 = 437 minutes

Step 2: Perform the division first: 2h42min ÷ 6

• 162 minutes ÷ 6 = 27 minutes

Step 3: Substitute the values back into the expression: 3 × (4h15min - 27 + 7h17min)

• 4h15min - 27 + 7h17min = 255 - 27 + 437 = 665 minutes

Step 4: Multiply the expression by 3: 3 × 665 = 1995 minutes

Therefore, 3 × (4h15min - 2h42min ÷ 6 + 7h17min) is equal to 1995 minutes.