问题
解答题
计算题: (1)(-17)+59+(-37) (2)(+7)-(+8)+(-3)-(-6)+2 (3)(
(4)(-6)÷(-4)÷(-
(5)(-
|
答案
(1)原式=-17+59-37
=5;
(2)原式=7-8-3+6+2
=4;
(3)原式=
×(-12)+1 4
×(-12)-1 6
×(-12)1 2
=-3-2+6
=1;
(4)原式=
×(-3 2
)5 6
=-
;5 4
(5)原式=(-
)×9 5
+(-25 9
)÷(-3 8
)3 4
=-5+1 2
=-
.9 2