题目内容
简算.
|
|
(1)
-
-
,
=
-(
+
),
=
-1,
=
;
(2)
÷6+
×
,
=
×
+
×
,
=
×(
+
),
=
×1,
=
.
13 |
3 |
7 |
13 |
6 |
13 |
=
13 |
3 |
7 |
13 |
6 |
13 |
=
13 |
3 |
=
10 |
3 |
(2)
5 |
7 |
5 |
7 |
5 |
6 |
=
5 |
7 |
1 |
6 |
5 |
7 |
5 |
6 |
=
5 |
7 |
1 |
6 |
5 |
6 |
=
5 |
7 |
=
5 |
7 |
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