问题
解答题
13
|
答案
13
-1 2
×214 15
-6÷16 7
,4 5
=13
-1 2
×214 15
-6×6 7
,5 9
=
-27 2
×14 15
-6×20 7
,5 9
=
-27 2
-8 3
,10 3
=
-(27 2
+8 3
),10 3
=
-6,27 2
=7
.1 2
13
|
13
-1 2
×214 15
-6÷16 7
,4 5
=13
-1 2
×214 15
-6×6 7
,5 9
=
-27 2
×14 15
-6×20 7
,5 9
=
-27 2
-8 3
,10 3
=
-(27 2
+8 3
),10 3
=
-6,27 2
=7
.1 2