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As a mixed number, \( 3 \frac{6}{7} \times 2 \frac{2}{3} \)

Ask by Haynes Maxwell. in Canada
Feb 03,2025

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Answer

\( 3 \frac{6}{7} \times 2 \frac{2}{3} = 10 \frac{2}{7} \)

Solution

To multiply the mixed numbers \( 3 \frac{6}{7} \) and \( 2 \frac{2}{3} \) and express the result as a mixed number, follow these steps: 1. **Convert Mixed Numbers to Improper Fractions:** - \( 3 \frac{6}{7} = \frac{(3 \times 7) + 6}{7} = \frac{21 + 6}{7} = \frac{27}{7} \) - \( 2 \frac{2}{3} = \frac{(2 \times 3) + 2}{3} = \frac{6 + 2}{3} = \frac{8}{3} \) 2. **Multiply the Improper Fractions:** \[ \frac{27}{7} \times \frac{8}{3} = \frac{27 \times 8}{7 \times 3} = \frac{216}{21} \] 3. **Simplify the Fraction:** - Divide both the numerator and the denominator by 3: \[ \frac{216 ÷ 3}{21 ÷ 3} = \frac{72}{7} \] 4. **Convert Back to a Mixed Number:** - Divide 72 by 7: \[ 72 ÷ 7 = 10 \text{ with a remainder of } 2 \] - So, \( \frac{72}{7} = 10 \frac{2}{7} \) **Final Answer:** \[ 3 \frac{6}{7} \times 2 \frac{2}{3} = 10 \frac{2}{7} \]

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To multiply the mixed numbers \( 3 \frac{6}{7} \) and \( 2 \frac{2}{3} \), we first convert them to improper fractions. For \( 3 \frac{6}{7} \): \[ 3 \times 7 + 6 = 21 + 6 = 27. \] So, \( 3 \frac{6}{7} = \frac{27}{7} \). For \( 2 \frac{2}{3} \): \[ 2 \times 3 + 2 = 6 + 2 = 8. \] So, \( 2 \frac{2}{3} = \frac{8}{3} \). Now, we multiply the improper fractions: \[ \frac{27}{7} \times \frac{8}{3} = \frac{27 \times 8}{7 \times 3} = \frac{216}{21}. \] Now we simplify \( \frac{216}{21} \) by finding the greatest common divisor (GCD). The GCD of 216 and 21 is 3: \[ \frac{216 \div 3}{21 \div 3} = \frac{72}{7}. \] Finally, we convert \( \frac{72}{7} \) back to a mixed number: \[ 72 \div 7 = 10 \quad \text{remainder} \; 2, \] so, \[ \frac{72}{7} = 10 \frac{2}{7}. \] Thus, the product \( 3 \frac{6}{7} \times 2 \frac{2}{3} \) as a mixed number is \( 10 \frac{2}{7} \).

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