题目内容
解比例.
|
X:12=
|
|
21 |
X |
32 |
8 |
32x=21×8
32x=168
x=
21 |
4 |
X:12=
7 |
4 |
2.8x=12×
7 |
4 |
2.8x=21
x=7.5;
1 |
20 |
1 |
5 |
1 |
4 |
1 |
5 |
1 |
20 |
1 |
4 |
1 |
5 |
1 |
80 |
x=
1 |
16 |
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相关题目
题目内容
|
X:12=
|
|
21 |
X |
32 |
8 |
21 |
4 |
7 |
4 |
7 |
4 |
1 |
20 |
1 |
5 |
1 |
4 |
1 |
5 |
1 |
20 |
1 |
4 |
1 |
5 |
1 |
80 |
1 |
16 |