问题
解答题
计算:(1)-5-3.5÷
(2)-14-[1-(1-0.5×
|
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×
)]×[2-(-3)2]1 3
=-1-[1-(1-
)]×(2-9)1 6
=-1-(1-1+
)×(-7)1 6
=-1-
×(-7)1 6
=-1+7 6
=
.1 6