Question

Find the closure property for the following questions.
1. 3 by 8, minus 5 by 7
2. 4 by9, 6 by 13
3. -7 by 5, minus 3 by 7​

Answer 1

Answer:

$1) \frac{3}{8} - \frac{5}{7} = \frac{7 \times 3 - 5 \times 8}{8 \times 7} \\ \\ = \frac{21 - 40}{56} = \frac{ - 19}{56}$

Answer 2

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$\begin{gathered}1) \frac{3}{8} - \frac{5}{7} = \frac{7 \times 3 - 5 \times 8}{8 \times 7} \\ \\ = \frac{21 - 40}{56} = \frac{ - 19}{56} \end{gathered}$