题目内容
解方程.
x×
=16
x=8
4÷x=
.
x×
| 8 |
| 9 |
| 2 |
| 5 |
4÷x=
| 2 |
| 15 |
(1)x×
=16
x×
÷
=16÷
x=16×
x=18;
(2)
x=8
x×
=8×
x=20;
(3)4÷x=
4÷x×x=
×x
×x=4
×x×
=4×
x=30.
| 8 |
| 9 |
x×
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
x=16×
| 9 |
| 8 |
x=18;
(2)
| 2 |
| 5 |
| 2 |
| 5 |
| 5 |
| 2 |
| 5 |
| 2 |
x=20;
(3)4÷x=
| 2 |
| 15 |
4÷x×x=
| 2 |
| 15 |
| 2 |
| 15 |
| 2 |
| 15 |
| 15 |
| 2 |
| 15 |
| 2 |
x=30.
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