题目内容

直接写出得数:
[她.d着-(
9
y6
-她.y着)]÷
2y
d
=
[(7
y
yd
+2.2÷6
2
)+2
d
]×着=
yd
y6
×(
9
yd
×y7-
9
yd
)
-(y2
2
-d
yd
-2
d
yd
)
=
(5)[0.i5-(
9
56
-0.55)]÷
25
i

=[0.i5+0.55-
9
56
i
25

=[5-
9
56
i
25

=
7
56
×
i
25

=
5
6


(2)[(7
5
53
+2.6÷6
2
5
)+2
5
i
]×5
=[(7
5
53
+
52
5
÷
32
5
)+
25
i
]×5,
=[7
5
53
+
3
i
+
25
i
]×5,
=[7
5
53
+(
3
i
+
25
i
)]×5,
=[7
5
53
+3]×5,
=50
5
53
×5,
=50
5
53


(3)
53
56
×(
9
53
×57-
9
53
)
-(52
6
5
-3
5
53
-2
i
53
)

=
53
56
×[(57-5)×
9
53
]-[52
6
5
-(3
5
53
+2
i
53
)],
=
53
56
×56×
9
53
-[52
6
5
-6],
=9-6
6
5

=2
5
5
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