问题
解答题
计算: (1)(-4)-(+11)-(-9); (2)(-79)÷2
(3)(-
(4)-32-(-
|
答案
(1)原式=-4-11+9=-6;
(2)原式=(-79)×
+4 9
×(-29)4 9
=
×(-79-29)4 9
=
×(-108)4 9
=-48;
(3)原式=-
×(-48)+1 6
×(-48)+(-3 4
)×(-48)1 12
=8-36+4
=-24;
(4)原式=-9-
×9 4
+6×2 9 3 2
=-9-
+91 2
=-
.1 2