问题
解答题
计算: (1)(-1)2013-|-7|+
(2)2-(-
|
答案
(1)原式=-1-7+3×1+5
=-1-7+3+5
=-8+8
=0;
(2)原式=2-
-2+2-1 4 3
=
-7 4
.3
计算: (1)(-1)2013-|-7|+
(2)2-(-
|
(1)原式=-1-7+3×1+5
=-1-7+3+5
=-8+8
=0;
(2)原式=2-
-2+2-1 4 3
=
-7 4
.3