问题
解答题
计算: (1)
(2)-0.52+
|
答案
(1)原式=
×(-2 5
)-5 12
×(-8 21
)-0.75=-7 4
+1 6
-2 3
=-0.25;3 4
(2)原式=-0.25+0.25-8+2=-6.
计算: (1)
(2)-0.52+
|
(1)原式=
×(-2 5
)-5 12
×(-8 21
)-0.75=-7 4
+1 6
-2 3
=-0.25;3 4
(2)原式=-0.25+0.25-8+2=-6.