问题 解答题
计算 
(1)(
1
9
-
2
3
+
3
5
)×45

(2)-14-
1
6
×[-3+(-3)2]
答案

(1)(

1
9
-
2
3
+
3
5
)×45,

=

1
9
×45-
2
3
×45+
3
5
×45,

=5-30+27,

=32-30,

=2;

(2)-14-

1
6
×[-3+(-3)2],

=-1-

1
6
×(-3+9),

=-1-

1
6
×6,

=-1-1,

=-2.

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