问题 解答题
计算.
(1)(-3)×(-2
1
6
)+(-5)×2
1
6
-4×
13
6
;          
(2)(-29
12
13
)×26

(3)-4×(-
5
6
-
1
5
+1
1
4
-
11
12
)×15
答案

(1)原式=3×

13
6
-5×
13
6
-4×
13
6

=

13
6
×(3-5-4)

=-6×

13
6

=-13;

(2)原式=(-30+

1
13
)×26

=-780+2

=-778;

(3)原式=-60×(-

5
6
-
1
5
+1
1
4
-
11
12

=50+12-75+55

=42.

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