问题 解答题
计算:(1)-5-3.5÷
7
8
×(-
3
4
)

(2)-14-[1-(1-0.5×
1
3
)]×[2-(-3)2]
答案

(1)-5-3.5÷

7
8
×(-
3
4

=-5-

7
2
×
8
7
×(-
3
4

=-5+3

=-2;

(2)-14-[1-(1-0.5×

1
3
)]×[2-(-3)2]

=-1-[1-(1-

1
6
)]×(2-9)

=-1-(1-1+

1
6
)×(-7)

=-1-

1
6
×(-7)

=-1+

7
6

=

1
6

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