7. Jessie has 3 crayons. If each crayon is \( 2 \frac{5}{8} \) inches long, what is the combined length of all 3 crayons?

To find the combined length of the crayons, follow these steps: 1. Convert the mixed number to an improper fraction. The crayon length is 2 5/8 inches. Multiply the whole number 2 by the denominator 8 and add the numerator 5:   2 × 8 + 5 = 16 + 5 = 21, so 2 5/8 inches is equivalent to 21/8 inches. 2. Multiply by the number of crayons (3):   3 × 21/8 = 63/8 inches. 3. Convert 63/8 back to a mixed number. Divide 63 by 8:   8 goes into 63 seven times (7 × 8 = 56) with a remainder of 7, giving:   7 7/8 inches. Thus, the combined length of all 3 crayons is 7 7/8 inches.