题目内容
求未知数χ
χ-
χ=
:χ=7:16.
χ-
| 7 |
| 10 |
| 1 |
| 2 |
| 1 |
| 2 |
X-
X=
,
X×
=
×
,
X=1
;
:X=7:16,
7X=16×
,
7X÷7=8÷7,
X=1
.
| 7 |
| 10 |
| 1 |
| 2 |
| 3 |
| 10 |
| 10 |
| 3 |
| 1 |
| 2 |
| 10 |
| 3 |
X=1
| 2 |
| 3 |
| 1 |
| 2 |
7X=16×
| 1 |
| 2 |
7X÷7=8÷7,
X=1
| 1 |
| 7 |
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