题目内容

(1)-32÷[-
1
2
+(-1
3
4
)]
(2)(1
1
3
+
1
8
-2.75)×(-24)+(-1)2009-|-2|3
(3)-36×(
1
4
-
1
9
-
1
12
)÷(-2)
(1)原式=-9÷(-
9
4

=9×
4
9

=4;

(2)原式=
4
3
×(-24)+
1
8
×(-24)-2.75×(-24)-1-23
=-32-3+66-1-8
=22;

(3)原式=[(-36)×
1
4
-(-36)×
1
9
-(-36)×
1
12
]÷(-2)
=[-9+4+3]÷(-2)
=(-2)÷(-2)
=1.
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