题目内容
|
|
①
x÷5=
,
x×
=
,
x×15=
×15,
x=5;
②
÷x=
,
×
=
,
×35x=35x×
,
21=30x,
30x÷30=21÷30,
x=0.7;
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 15 |
| 1 |
| 3 |
x=5;
②
| 3 |
| 5 |
| 6 |
| 7 |
| 3 |
| 5 |
| 1 |
| x |
| 6 |
| 7 |
| 3 |
| 5x |
| 6 |
| 7 |
21=30x,
30x÷30=21÷30,
x=0.7;
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