10. Exemplar example problems V

Let \(a\), \(b\), \(c\) be the three rational numbers where \(a = \frac{2}{3}\), \(b = \frac{4}{5}\) and \(c = -\frac{5}{6}\). Verify \(a \times (b \times c) = (a \times b) \times c\) (Associative property of multiplication)