问题
解答题
化简
|
答案
(1)
=1.5;0.45×7×0.5 3×0.5×0.7
(2)
,
+3 8 1 4 1+2
×2 5 5 8
=
,5 8 1+
×12 5 5 8
=
,5 8 1+ 3 2
=
,5 8 5 2
=
×5 8
,2 5
=
.1 4
化简
|
(1)
=1.5;0.45×7×0.5 3×0.5×0.7
(2)
,
+3 8 1 4 1+2
×2 5 5 8
=
,5 8 1+
×12 5 5 8
=
,5 8 1+ 3 2
=
,5 8 5 2
=
×5 8
,2 5
=
.1 4