解答:解:(1)原式=-4-28+19-24-------------------------------------------2
=-37-------------------------------------------4
(2)原式=-22-3-------------------------------------------2
=-25-------------------------------------------4
(3)原式=1+10-------------------------------------------2
=11-------------------------------------------4
(4)原式=4
×(-9×
-0.8)÷(-5
)--------------------------1
=
×(-
)×(-
)-------------------------------------------2
=
-------------------------------------------4