问题
解答题
计算: (1)(
(2)-16-|-5|+2×(-
|
答案
(1)(
-1 3
+5 21
)×(-42)3 14
=-14+10-9,
=-13;
(2)-16-|-5|+2×(-
)21 2
=-1-5+2×1 4
=-5
.1 2
计算: (1)(
(2)-16-|-5|+2×(-
|
(1)(
-1 3
+5 21
)×(-42)3 14
=-14+10-9,
=-13;
(2)-16-|-5|+2×(-
)21 2
=-1-5+2×1 4
=-5
.1 2