Question

Tính bằng cách thuận tiện                                                                                                                                 19/11 +  (8/13 +3/11)   

Answer 1

cái gì vậy ???

Answer 2

= 19/11 + 3/11 +  8/13

= 2 + 8/13

= 26/13 + 8/13 

= 34/13

Answer 3

19/11 + ( 8/13 + 3/11 )

= ( 19/11 + 3/11) + 8/13

= 2 + 8/13

= 34/13

Answer 4

\(\frac{9}{11}+\left(\frac{8}{13}+\frac{3}{11}\right)\)

=\(\frac{9}{11}+\frac{8}{13}+\frac{3}{11}\)

=\(\left(\frac{9}{11}+\frac{3}{11}\right)+\frac{8}{13}\)

=\(\frac{12}{11}+\frac{8}{13}\)

=\(\frac{244}{143}\)

Answer 5

19/11+(8/13+3/11)=19/11+8/13+3/11=(19/11+3/11)+8/13=2+8/13=34/13

Answer 6

19/11+(8/13+3/11)

=19/11+8/13+3/13

=(19/11+3/11)+8/13

=22/11+8/13

=2+8/13

=26/13+8/13

=34/13