问题
解答题
计算 (1)8+(-
(2)(
(3)3×(-6)-6÷(-
(4)5+15÷(-3)2×(-
|
答案
(1)原式=8+(-
)-6+1 4 1 4
=2;
(2)原式=
×12-1 2
×123 4
=6-9
=-3;
(3)原式=-18-6×(-2)
=-18+12
=-6;
(4)原式=5+15÷9×(-
)-22 5
=5+(-
)-22 3
=2
.1 3
计算 (1)8+(-
(2)(
(3)3×(-6)-6÷(-
(4)5+15÷(-3)2×(-
|
(1)原式=8+(-
)-6+1 4 1 4
=2;
(2)原式=
×12-1 2
×123 4
=6-9
=-3;
(3)原式=-18-6×(-2)
=-18+12
=-6;
(4)原式=5+15÷9×(-
)-22 5
=5+(-
)-22 3
=2
.1 3