问题
解答题
|
答案
(1)
21 |
X |
32 |
8 |
32X=21×8
32X÷32=168÷32
X=5.25;
(2)X:12=
7 |
4 |
2.8X=12×
7 |
4 |
2.8X÷2.8=21÷2.8
X=7.5;
(3)
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
x=20.
|
(1)
21 |
X |
32 |
8 |
32X=21×8
32X÷32=168÷32
X=5.25;
(2)X:12=
7 |
4 |
2.8X=12×
7 |
4 |
2.8X÷2.8=21÷2.8
X=7.5;
(3)
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
x=20.