问题 解答题
化简下面各比并求出比值.
75:35   6:
2
3
5.6:4.2
5
6
5
8
答案

75:35    

=(75÷5):(35÷5)

=15:7

75:35

=15:7

=

15
7

6:

2
3

=(6×3÷2):(

2
3
×3÷2)

=9:1

6:

2
3
 

=9:1

=9

5.6:4.2

=(5.6×5):(4.2×5)

=28:21

=(28÷7):(21÷7)

=4:3

5.6:4.2

=4:3

=

4
3

5
6
5
8

=(

5
6
×24÷5):(
5
8
×24÷5)

=4:3

5
6
5
8

=4:3

=

4
3

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