Question

Answer 1

=7/8:(4/18-1/18)+7/8:(1/36-15/36)

=7/8:3/18+7/8:(-7/8)

=7/8.+7/8.18/-7

=7/8(6+18/-7)

=7/8.24/

=3

 

 

Answer 2

chỗ 7/8.24/7 nha

 

Answer 3

=7/8:(4/18-1/18)+7/8:(1/36-15/36)

=7/8:3/18+7/8:(-7/8)

=7/8.+7/8.18/-7

=7/8(6+18/-7)

=7/8.24/

=3

Answer 4

 7/8:(4/18-1/18)+7/8:(1/36-15/36)

=7/8:3/18+7/8:(-7/18)

=7/8: (-2/9)

=-63/16