Question

fill in the boxes also mention the properties used-7/13+-2/9=-2/9+_​

Answer 1

Answer:

-7/13+-2/9=-2/9+-7/13

commutative property

Answer 2

$\frac{ - 7}{13} + \frac{ - 2}{9} = \frac{2}{9} + \frac{ - 115}{117}$

will be your answer.