问题
解答题
计算: (1)
(2)-42+(3-5)+(
|
答案
(1)
÷7 4
-7 8
×(-6)2 3
=2+4
=6;
(2)-42+(3-5)+(
)3-(-2)3.1 3
=-16-2+
+81 27
=-9
.26 27
计算: (1)
(2)-42+(3-5)+(
|
(1)
÷7 4
-7 8
×(-6)2 3
=2+4
=6;
(2)-42+(3-5)+(
)3-(-2)3.1 3
=-16-2+
+81 27
=-9
.26 27