Perform the indicated operation. -5/4 + -7/9

Simplify the following:

-5/4 - 7/9

Put -5/4 - 7/9 over the common denominator 36. -5/4 - 7/9 = (9 (-5))/36 + (4 (-7))/36:

(9 (-5))/36 + (4 (-7))/36

9 (-5) = -45:

(-45)/36 + (4 (-7))/36

4 (-7) = -28:

(-45)/36 + (-28)/36

-45/36 - 28/36 = (-45 - 28)/36:

(-45 - 28)/36

-45 - 28 = -(45 + 28):

(-(45 + 28))/36

| 1 |

| 4 | 5

+ | 2 | 8

| 7 | 3:

(-73)/36