题目内容
附加题:
(1)计算:1-99+(-2);
(2)化简:x+2x-
x.
(1)计算:1-99+(-2);
(2)化简:x+2x-
| 1 |
| 2 |
(1)1-99+(-2)
=1-99-2
=1-101
=-100;
(2)x+2x-
x
=(1+2-0.5)x
=2.5x.
=1-99-2
=1-101
=-100;
(2)x+2x-
| 1 |
| 2 |
=(1+2-0.5)x
=2.5x.
练习册系列答案
相关题目
题目内容
| 1 |
| 2 |
| 1 |
| 2 |