December 2023 1 11 Report
1. Efectúa las siguientes operaciones.

a) −

12

21



17

21

=

b) (−

1

2

+

5

3

) ( 5 +

5

2

) =

c) (−

2

5

+ 4) − ( −

1

3

+ 1) =

d) (−

3

4

+

5

3

) − ( −

1

3



3

2

) =​

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