问题
解答题
计算:2.5×(
|
答案
2.5×(
-2 3
)+32 5 1 6
=2.5×
+34 15
,1 6
=
×5 2
+34 15
,1 6
=
+32 3
,1 6
=3
.5 6
计算:2.5×(
|
2.5×(
-2 3
)+32 5 1 6
=2.5×
+34 15
,1 6
=
×5 2
+34 15
,1 6
=
+32 3
,1 6
=3
.5 6