问题 解答题
(8
5
6
-10.5×
4
5
)÷4
1
3
答案

(8

5
6
-10.5×
4
5
)÷4
1
3

=(8

5
6
-8
2
5
)÷4
1
3

=

13
30
÷4
1
3

=

1
10

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