题目内容
解方程.
x-
x=3.6
÷x=
=9.1
:x=15:20.
x-
| 1 |
| 4 |
| 5 |
| 4 |
| 2 |
| 7 |
| χ |
| 7 |
| 3 |
| 4 |
(1)x-
x=3.6,
x=3.6,
x÷
=3.6÷
,
x=4.8;
(2)
÷x=
÷x×x=
×x,
÷
=
x÷
,
x=4
;
(3)
=9.1,
×7=9.1×7,
x=63.7;
(4)
:x=15:20,
15x=20×
,
15x÷15=15÷15,
x=1.
| 1 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
x=4.8;
(2)
| 5 |
| 4 |
| 2 |
| 7 |
| 5 |
| 4 |
| 2 |
| 7 |
| 5 |
| 4 |
| 2 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
x=4
| 3 |
| 8 |
(3)
| x |
| 7 |
| x |
| 7 |
x=63.7;
(4)
| 3 |
| 4 |
15x=20×
| 3 |
| 4 |
15x÷15=15÷15,
x=1.
练习册系列答案
相关题目