Question

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Answer 1

Answer:

Q.3.

1)

$\frac{a}{b} = \frac{5}{7} \\ \frac{2a + 3b} {2a - 3b}.....by \: componendo - dividendo \\ \frac{2(5) + 3(7)}{2(5) - 3(7)} \\ \frac{10 + 21}{10 - 21} \\ \frac{31}{ - 11}$

2)a3+b3/b3

125+343/343

468/343.