问题
解答题
计算: (1)
(2)(-
(3)(-
(4)(-
(5)
(6)(-
(7)(-1
(8)3
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答案
(1)原式=
-2 5
=-3 5
;1 5
(2)原式=-
-1 3
=-1;2 3
(3)原式=-
+ 5 15
=6 15
;1 15
(4)原式=-
- 20 24
=-9 24
;29 24
(5)原式=
-1 2
=8 3
- 3 6
=-216 6
;1 6
(6)原式=-
-1 2
=-4 3
- 3 6
=-18 6
;5 6
(7)原式=-
-4 3
=-13 6
-8 6
=-13 6
=-321 6
;1 2
(8)原式=
-13 4
=13 12
-39 12
=13 12
=213 6
.1 6