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4(1)/(2) xx 4(1)/(3) -8(1)/(3) -: 5(2)/(...

`4(1)/(2) xx 4(1)/(3) -8(1)/(3) -: 5(2)/(3)` =?

A

`(7)/(17)`

B

`1 (33)/(34)`

C

8

D

`18 (1)/(34)`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given expression \( 4\frac{1}{2} \times 4\frac{1}{3} - 8\frac{1}{3} \div 5\frac{2}{3} \), we will follow these steps: ### Step 1: Convert mixed numbers to improper fractions 1. **Convert \( 4\frac{1}{2} \)**: \[ 4\frac{1}{2} = 4 \times 2 + 1 = 8 + 1 = \frac{9}{2} \] 2. **Convert \( 4\frac{1}{3} \)**: \[ 4\frac{1}{3} = 4 \times 3 + 1 = 12 + 1 = \frac{13}{3} \] 3. **Convert \( 8\frac{1}{3} \)**: \[ 8\frac{1}{3} = 8 \times 3 + 1 = 24 + 1 = \frac{25}{3} \] 4. **Convert \( 5\frac{2}{3} \)**: \[ 5\frac{2}{3} = 5 \times 3 + 2 = 15 + 2 = \frac{17}{3} \] ### Step 2: Substitute the improper fractions into the expression Now, we can rewrite the expression: \[ \frac{9}{2} \times \frac{13}{3} - \frac{25}{3} \div \frac{17}{3} \] ### Step 3: Perform the multiplication and division 1. **Multiply \( \frac{9}{2} \) and \( \frac{13}{3} \)**: \[ \frac{9}{2} \times \frac{13}{3} = \frac{9 \times 13}{2 \times 3} = \frac{117}{6} \] 2. **Divide \( \frac{25}{3} \) by \( \frac{17}{3} \)**: \[ \frac{25}{3} \div \frac{17}{3} = \frac{25}{3} \times \frac{3}{17} = \frac{25 \times 3}{3 \times 17} = \frac{25}{17} \] ### Step 4: Rewrite the expression with the results Now, we have: \[ \frac{117}{6} - \frac{25}{17} \] ### Step 5: Find a common denominator and subtract 1. **Find the LCM of 6 and 17**: The LCM is \( 102 \). 2. **Convert each fraction**: - For \( \frac{117}{6} \): \[ \frac{117}{6} = \frac{117 \times 17}{6 \times 17} = \frac{1989}{102} \] - For \( \frac{25}{17} \): \[ \frac{25}{17} = \frac{25 \times 6}{17 \times 6} = \frac{150}{102} \] 3. **Subtract the fractions**: \[ \frac{1989}{102} - \frac{150}{102} = \frac{1989 - 150}{102} = \frac{1839}{102} \] ### Step 6: Simplify the result 1. **Simplify \( \frac{1839}{102} \)**: - Divide both the numerator and denominator by 3: \[ \frac{1839 \div 3}{102 \div 3} = \frac{613}{34} \] ### Step 7: Convert back to a mixed number 1. **Convert \( \frac{613}{34} \)** to a mixed number: - Divide \( 613 \) by \( 34 \): \[ 613 \div 34 = 18 \quad \text{(whole number)} \] - Remainder: \[ 613 - (34 \times 18) = 613 - 612 = 1 \] - So, \( \frac{613}{34} = 18\frac{1}{34} \). ### Final Answer Thus, the final answer is: \[ \boxed{18\frac{1}{34}} \]
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