Question
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\( \begin{array}{ll}\text { a. } 3 \frac{1}{4}>3 \frac{1}{5} & \text { b. } 5 \frac{2}{7}>4\end{array} \)

Ask by Marsh Macdonald. in Peru
Dec 16,2024

Real Tutor Solution

Tutor-Verified Answer

Answer

a. \( 3 \frac{1}{4} > 3 \frac{1}{5} \) es verdadero. b. \( 5 \frac{2}{7} > 4 \) es verdadero.

Solution

Para comparar las fracciones mixtas, primero convertimos cada una a fracciones impropias. a. \( 3 \frac{1}{4} \) se convierte en \( \frac{13}{4} \) y \( 3 \frac{1}{5} \) se convierte en \( \frac{16}{5} \). Ahora, encontramos un denominador común para comparar \( \frac{13}{4} \) y \( \frac{16}{5} \). El mínimo común múltiplo de 4 y 5 es 20. Convertimos ambas fracciones: - \( \frac{13}{4} = \frac{13 \times 5}{4 \times 5} = \frac{65}{20} \) - \( \frac{16}{5} = \frac{16 \times 4}{5 \times 4} = \frac{64}{20} \) Ahora podemos comparar: \( \frac{65}{20} > \frac{64}{20} \) Por lo tanto, \( 3 \frac{1}{4} > 3 \frac{1}{5} \) es verdadero. b. Para \( 5 \frac{2}{7} \), lo convertimos a fracción impropia: \( 5 \frac{2}{7} = \frac{37}{7} \) Ahora, comparamos \( \frac{37}{7} \) con 4. Convertimos 4 a una fracción con el mismo denominador: \( 4 = \frac{28}{7} \) Ahora comparamos: \( \frac{37}{7} > \frac{28}{7} \) Por lo tanto, \( 5 \frac{2}{7} > 4 \) es verdadero. Resumiendo: a. Verdadero b. Verdadero

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The Deep Dive

To determine which is greater, first convert the mixed numbers to improper fractions. For \(3 \frac{1}{4}\), it becomes \(\frac{13}{4}\), and \(3 \frac{1}{5}\) changes to \(\frac{16}{5}\). By finding a common denominator of 20, \(\frac{13}{4} = \frac{65}{20}\) and \(\frac{16}{5} = \frac{64}{20}\). Since \(65 > 64\), indeed, \(3 \frac{1}{4} > 3 \frac{1}{5}\). For part b, \(5 \frac{2}{7}\) converts to \(\frac{37}{7}\) while 4 can be expressed as \(\frac{28}{7}\). Because \(37 > 28\), it follows that \(5 \frac{2}{7} > 4\) as well.

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