问题
解答题
计算: (1)5-6-(-3)+(-4)-7 (2)(1-
(3)9
(4)-32+(|-2|×4-5)÷(-
|
答案
(1)原式=5-6+3-4-7
=8-17
=-9;
(2)原式=-1×48-
×(-48)+1 6
×(-48)3 4
=-48+8-36
=-40-36
=-76;
(3)原式=(10-
)×171 17
=10×17-
×171 17
=170-1
=169;
(4)原式=-9+(2×4-5)×(-3)
=-9+3×(-3)
=-9-9
=-18.