问题
解答题
计算: (1)0-
(2)(-3
(3)|-7
|
答案
(1)0-
-(-3.25)+21 2
-73 4
=-1 2
-71 2
+31 2
+21 4
=-8+6=-23 4
(2)(-3
)+(-2.4)-(-2 3
)-(-41 3
)-(-42 5
)=-32 5
+2=-11 3 1 3
(3)|-7
+43 8
|+(-181 2
)+|-6-1 4
|=-21 2
-187 8
+61 4
=-141 2 5 8