| 计算或化简. (1)(-5)×2+20÷(-4) (2)-14-
(3)24×(
(4)化简:-
|
答案:
| (1)(-5)×2+20÷(-4) =-10-5 =-15;(2)-14-
=-1-
=-1-
=-1+
=
=4-18-15+
=-29-8 =-37;(4)-
=-3a+1+2a+2 =-a+3. |

| 计算或化简. (1)(-5)×2+20÷(-4) (2)-14-
(3)24×(
(4)化简:-
|
答案:
| (1)(-5)×2+20÷(-4) =-10-5 =-15;(2)-14-
=-1-
=-1-
=-1+
=
=4-18-15+
=-29-8 =-37;(4)-
=-3a+1+2a+2 =-a+3. |