问题
解答题
化简下面各比
|
答案
(1)21:35,
=(21÷7):(35÷7),
=3:5;
(2)
:5 6
,4 9
=(
×36):(5 6
×36),4 9
=30:16,
=(30÷2):(16÷2),
=15:8;
(3)
:2 3
,3 9
=(
×9):(2 3
×9),3 9
=6:3,
=(6÷3):(3÷30,
=2:1;
(4)36:2,
=(36÷2):(2÷2),
=18:1.