Question

Solve question and f o ll o w me please ​

Answer 1

Step-by-step explanation:

3(i)

$a = \frac{ - 1}{2} \: \: b = \frac{2}{3} \: \: \: \: c = \frac{3}{5} \\ we \: have \: to \: verify \: (a + b) + c = a + (b + c) \\ ( - \frac{1}{2} + \frac{2}{3}) + \frac{3}{5} = \frac{ - 1}{2} + ( \frac{2}{3} + \frac{3}{5}) \\ (\frac{ - 3 + 4}{6}) + \frac{3}{5} = \frac{ - 1}{2} + ( \frac{10 + 9}{15}) \\ \frac{1}{6} + \frac{3}{5} = \frac{ - 1}{2} + ( \frac{19}{15}) \\ \frac{5 + 18}{30} = \frac{ - 15 + 38}{30} \\ \frac{23}{30} = \frac{23}{30} \\ hence \: verified$