Question

9) Verify that a + b = b + a by taking
(1) a = -7/5, b = 2/17
(2) a = -1, b = -2/3​

Answer 1

$a + b = b + a \\ \: left \: hand \: side \frac{ - 7}{5} + \frac{2}{17} = \frac{ - 119 + 10}{85} \\ = \frac{109}{85} \\ right \: hand \: side \: b + a =$