问题
解答题
化简比
|
答案
(1)0.3:
,9 7
=
:3 10
,9 7
=(
×70):(3 10
×70),9 7
=21:90,
=7:30;
(2)
:1 7
,5 14
=(
×14):(1 7
×14),5 14
=2:5;
(3)1.5:1,
=(1.5×2):(1×2),
=3:2.
化简比
|
(1)0.3:
,9 7
=
:3 10
,9 7
=(
×70):(3 10
×70),9 7
=21:90,
=7:30;
(2)
:1 7
,5 14
=(
×14):(1 7
×14),5 14
=2:5;
(3)1.5:1,
=(1.5×2):(1×2),
=3:2.