问题 解答题
化简下列比,并求比值.
5
4
2
3
=18:1.2.
答案

(1)

5
4
2
3

=(

5
4
×12):(
2
3
×12),

=15:8,

5
4
2
3

=

5
4
÷
2
3

=

15
8

(2)18:1.2,

=(18×10):(1.2×10),

=180:12,

=(180÷12):(12÷12),

=15:1;

18:1.2,

=18÷1.2,

=15.

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