问题
解答题
计算:(1)(
(2)-12-(-1
|
答案
(1)原式=-(
×60-2 3
×60-1 12
×60),4 15
=-(40-5-16),
=-19.
(2)原式=-1-(-
)×3 2
+(-6)÷2 9
,9 4
=-1+
-1 3
,8 3
=-
.10 3
计算:(1)(
(2)-12-(-1
|
(1)原式=-(
×60-2 3
×60-1 12
×60),4 15
=-(40-5-16),
=-19.
(2)原式=-1-(-
)×3 2
+(-6)÷2 9
,9 4
=-1+
-1 3
,8 3
=-
.10 3