问题 解答题
[4
5
9
-(2
2
5
+0.64)÷3
1
25
+
5
6
]×4.5
答案

[4

5
9
-(2
2
5
+0.64)÷3
1
25
+
5
6
]×4.5,

=[

41
9
-(
12
5
+
16
25
)÷
76
25
+
5
6
9
2

=[

41
9
-
76
25
×
25
76
+
5
6
9
2

=[

41
9
-1+
5
6
9
2

=[

32
9
+
5
6
9
2

=

79
18
×
9
2

=

79
4

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