Respuesta :

Step-by-step explanation:

1) - 5/4 plus 4/5

- 5/4 + 4/5

Just make the bottom number the same ( and remember everything u do to the bottom must be done to the top

- 5 4

--- + - - -

4 5

- 5×5 4×4

--- + - - -

4×5 5×4

-25 16

---- + - - - -

20 20

-9

----

20

= - 9/20

The others are the same, try it yourself, i can help u check, cuz it is hard for me to type here

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