题目内容
解方程.
x÷
|
x×
|
x÷
|
|
(1)x÷
=
,
x÷
×
=
×
,
x=
;
(2)x×
=
,
x×
÷
=
÷
,
x=
;
(3)x÷
=
,
x÷
×
=
×
,
x=
;
(4)
x=
,
x÷
=
÷
,
x=1.8.
| 1 |
| 6 |
| 3 |
| 4 |
x÷
| 1 |
| 6 |
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
x=
| 1 |
| 8 |
(2)x×
| 7 |
| 15 |
| 2 |
| 5 |
x×
| 7 |
| 15 |
| 7 |
| 15 |
| 2 |
| 5 |
| 7 |
| 15 |
x=
| 6 |
| 7 |
(3)x÷
| 6 |
| 7 |
| 1 |
| 3 |
x÷
| 6 |
| 7 |
| 6 |
| 7 |
| 1 |
| 3 |
| 6 |
| 7 |
x=
| 2 |
| 7 |
(4)
| 2 |
| 5 |
| 18 |
| 25 |
| 2 |
| 5 |
| 2 |
| 5 |
| 18 |
| 25 |
| 2 |
| 5 |
x=1.8.
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