问题 解答题
化简比
85:51
1
6
2
3
8:
8
9
12:56.
答案

85:51,

=(85÷17):(51÷17),

=5:3;

1
6
2
3

=(

1
6
×6):(
2
3
×6),

=1:4;

8:

8
9

=(8×

9
8
):(
8
9
×
9
8
),

=9:1;

12:56,

=(12÷4):(56÷4),

=3:14.

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