问题
解答题
化简下列比,并求比值.
|
答案
(1)
:5 4
,2 3
=(
×12):(5 4
×12),2 3
=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.
化简下列比,并求比值.
|
(1)
:5 4
,2 3
=(
×12):(5 4
×12),2 3
=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.