题目内容
未知数X.
| 1.2×4+3X=9.3 |
| 3.5:X=
|
(1)1.2×4+3x=9.3,
4.8+3x=9.3,
4.8+3x-4.8=9.3-4.8,
3x=4.5,
3x÷3=4.5÷3,
x=1.5;
(2)
x+
x=4.4,
1.1x=4.4,
1.1x÷1.1=4.4÷1.1,
x=4;
(3)3.5:x=
:
,
x=1.4,
x÷
=1.4÷
,
x=0.3.
4.8+3x=9.3,
4.8+3x-4.8=9.3-4.8,
3x=4.5,
3x÷3=4.5÷3,
x=1.5;
(2)
| 1 |
| 2 |
| 3 |
| 5 |
1.1x=4.4,
1.1x÷1.1=4.4÷1.1,
x=4;
(3)3.5:x=
| 14 |
| 3 |
| 2 |
| 5 |
| 14 |
| 3 |
| 14 |
| 3 |
| 14 |
| 3 |
| 14 |
| 3 |
x=0.3.
练习册系列答案
相关题目