解比例.
x=
[
]|
A .10 |
B .8 |
|
C .2.25 |
D .40 |
解比例.
x=
[
]|
A .2 |
B .8 |
|
C .2.25 |
D .40 |
解比例.
x=
[
]|
A .10 |
B .8 |
|
C .2.25 |
D .40 |
解比例.
3∶8=15∶x
x=
[
]|
A .10 |
B .8 |
|
C .2.25 |
D .40 |
解比例,并验算.
x=
[
]|
A .8 |
B .12 |
|
C .4.5 |
D .10 |
解比例,并验算.
x∶
x=
[
]|
A .8 |
B .12 |
|
C .4.5 |
D .10 |
解比例,并验算.
6.4∶0.8=x∶1.5
x=
[
]|
A .8 |
B .12 |
|
C .4.5 |
D .10 |
解比例.
x=
[
]|
A . |
B .0.26 |
|
C .20 |
D .60 |