Question

4/7+(-4/9)+3/7+(-13/9)​

Answer 1

Step-by-step explanation:

36/63-28/63+27/63-91/63

8/63-64/63

-56/63

Answer 2

4/7 + 3/7

$= \frac{4 + 3}{7}$

= 7 / 7 = 1 .

(-4/9) + (-13/9)

=

$= \frac{ - 4 + - 13}{9} \\ = - \frac{ - 4 - 13}{9} \\ = \frac{ - 17}{9}$

= –17/9 + 1/1

= –17 + 9 / 9

= –6 / 9

= –2 / 3 .