Question

Tính nhanh

a) ( 9/15 + 8/11 ) + 6/15

b) ( 26/17 + 15/34 ) + ( 8/17 + 19/34 )

 

Answer 1

=\(\frac{19}{11}\)

Answer 2

 =( 9/15 + 6/15)+8/11

=15/15+8/11

=1+8/11

=19/11

Answer 3

(9/15+8/11)+6/15

(9/15+6/15)+8/11=1+8/11=19/11 nha

Answer 4

19/11

Answer 5

  (9/15 + 8/11) + 6/15

=(9/15 + 6/15) + 8/11

=15/15 + 8/11

=1 + 8/11

=8/11

Answer 6

lộn = 19/11