问题 解答题
计算:
(1)(-4
7
8
)-(-5
1
2
)+(-4
1
4
)-(+3
1
8
)

(2)-14-(1-0.5)×
1
3
×[2-(-3)2]
答案

(1)(-4

7
8
)-(-5
1
2
)+(-4
1
4
)-(+3
1
8
)=-4
7
8
+5
1
2
-4
1
4
-3
1
8
=-4
7
8
-3
1
8
+5
1
2
-4
1
4
=-8+5
1
2
-4
1
4
=-6
3
4

(2)-14-(1-0.5)×

1
3
×[2-(-3)2]=-1-
1
2
×
1
3
×[2-9]=-1-
1
6
×(-7)=-1+
7
6
=
1
6

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