= (7/4-7/8- 12) × 8/7

= 7/4× 8/7-7× 8/7- 12× 8/7

= 2- 1-265438+2/0

= 265438+ 19 in 0。

19 and 72 ×(-36)

= (0 in 65438+20-72) × (-36)

= 20× (-36)- 1×(-36) in 72 copies.

= 0 in-720+65438+2.

=-7 19 and half of 1

( 1/3+ 1/4- 1/6) × (-24)

= 1×(-24)+ 1×(-24)- 1× (-24)-6.

=-8-6+4

=- 10

9 and 8/9× (-9)

= ( 1)×(-9)

= 10×(-9)-9 points 1×(-9)

=-90+ 1

=-89