Question

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Explanation:

Step1: Find common denominator

To subtract fractions, we need a common denominator. The least common denominator of 5 and 8 is \( 5\times8 = 40 \), so we multiply numerator and denominator of \( \frac{3}{5} \) by 8 and \( \frac{3}{8} \) by 5.
\( \frac{3}{5}-\frac{3}{8}=\frac{3\times8}{5\times8}-\frac{3\times5}{8\times5} \)

Step2: Calculate numerators

Calculate the numerators of the two fractions after getting common denominator.
\( \frac{3\times8}{5\times8}=\frac{24}{40} \), \( \frac{3\times5}{8\times5}=\frac{15}{40} \)

Step3: Subtract the fractions

Subtract the two fractions with common denominator.
\( \frac{24}{40}-\frac{15}{40}=\frac{24 - 15}{40}=\frac{9}{40} \)

Answer:

First blank row (from left to right, top to bottom): 8, 8, 5, 5; Second blank row: \( \frac{24}{40} \), \( \frac{15}{40} \); Third blank row: \( \frac{9}{40} \)