Question

verify communicative property of addition of rational number for 2 / 5 and -1 / 2​

Answer 1

Answer:

2/5 + (-1/2) = (-1/2) + 2/5

4/10 + (-5)/10 = 4/10 + (-5/10)

-1/10 = -1/10

Answer 2

Answer:

$\frac{2}{5} + \frac{ - 1}{ \: \: \: 2} = \frac{4 \: + \: - 5}{10} = \frac{ - 1}{ \: \: 2} \: + \: \frac{2}{5} = \frac{ - 5 \: + \: 4}{ \: \: 10} \\ \frac{ - 1}{ \: \: 10} \: \: \: \: \: \: \: \: \: \: \ = \: \: \: \: \: \: \: \: \: \: \: \: \frac{ - 1}{ \: \: 10}$