Question

verify a+b=b+a,if a=-2/15,b=1\4​

Answer 1

$\frac{ - 2}{15} + \frac{1}{4} = \frac{1}{4} - \frac{2}{15} \\ 0 = 0 \\ verifed$

Answer 2

a+b = (-2/5)+(1/4)

= (-8/20)+(5/20)

= -3/20

b+a = (1/4)+(-2/5)

= -3/20