题目内容
解方程.
| 72÷x=
|
|
(1)
x=
,
x×
=
×
,
x=
;
(2)72÷x=
,
72÷x×x=
×x,
x=72,
x×
=72×
,
x=88;
(3)
x=24,
x×
=24×
,
x=56.
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 5 |
| 4 |
| 3 |
x=
| 4 |
| 5 |
(2)72÷x=
| 9 |
| 11 |
72÷x×x=
| 9 |
| 11 |
| 9 |
| 11 |
| 9 |
| 11 |
| 11 |
| 9 |
| 11 |
| 9 |
x=88;
(3)
| 3 |
| 7 |
| 3 |
| 7 |
| 7 |
| 3 |
| 7 |
| 3 |
x=56.
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