问题
解答题
计算: (1)(
(2)-32-[-
|
答案
(1)(
-2 5
)-(3 4
-1 4
)3 5
=
-2 5
-3 4
+1 4 3 5
=
+2 5
-(3 5
+3 4
)1 4
=1-1
=0;
(2)-32-[-
-(-1 4
)]÷(-1 3
)1 12
=-9-
÷(-1 12
)1 12
=-9+1
=-8.
计算: (1)(
(2)-32-[-
|
(1)(
-2 5
)-(3 4
-1 4
)3 5
=
-2 5
-3 4
+1 4 3 5
=
+2 5
-(3 5
+3 4
)1 4
=1-1
=0;
(2)-32-[-
-(-1 4
)]÷(-1 3
)1 12
=-9-
÷(-1 12
)1 12
=-9+1
=-8.