Question

Answer 1

\(\left(8\dfrac{5}{11}+9\dfrac{4}{13}\right)-\left(9\dfrac{4}{13}-1\dfrac{6}{11}\right)\)

\(=8\dfrac{5}{11}+9\dfrac{4}{13}-9\dfrac{4}{13}+1\dfrac{6}{11}\)

\(=9+1=10\)

Answer 2

a) (8 5/11 + 9 4/13) - (9 4/13 - 1 6/11)

= 8 + 5/11 + 9 + 4/13 - 9 - 4/13 + 1 + 6/11

= (8 + 9 - 9 + 1) + (5/11 + 6/11) + (4/13 - 4/13)

= 9 + 1 + 0

= 10

Answer 3

(8 

11

5

 

 +9 

13

4

 

 )−(9 

13

4

 

 −1 

11

6

 

 )

 

=

8

5

11

+

9

4

13

−

9

4

13

+

1

6

11

=8 

11

5

 

 +9 

13

4

 

 −9115134689101 

13

4

 

 +1 

11

6

 

 

 

=

9

+

1

=

10

=9+1=10