问题
填空题
计算:(0.027)-
|
答案
(0.027)-
-(-1 3
)-2+(21 7
)7 9
-(1 2
-1)02
=
-1 3 0.027
+1 (-
)21 7
-1=25 9
-49+1 0.3
-1=-45.5 3
故答案为-45.
计算:(0.027)-
|
(0.027)-
-(-1 3
)-2+(21 7
)7 9
-(1 2
-1)02
=
-1 3 0.027
+1 (-
)21 7
-1=25 9
-49+1 0.3
-1=-45.5 3
故答案为-45.