Question

这三个写过程！谢谢

Answer 1

 

追问

 

这个怎么做

Answer 2

(1)解原式(-15)+(-5)×3
=(-15)+(-15)
=-30
(2)解原式=(-4)-4-8-(-8)
=(-4)+(-4)+(-8)+8
=(-24)+8
=-16
(3)解原式=(-8)÷4/9×9/4
=(-8)×9/4×4/9
= (-8)×1
=-8

Answer 3

 

追问

过程就这些吗？

Answer 4