题目内容

计算
(1)[6
7
15
-(8.5-
3
4
)÷3.5]×(2
2
7
+
1
3

(2)(0.34×2400×25%+3×7
1
2
+26.25÷
3
7
)÷25.
(1)[6
7
15
-(8.5-
3
4
)÷3.5]×(2
2
7
+
1
3
),
=[6
7
15
-7.75÷3.5]×
55
21

=[6
7
15
-
31
14
55
21

=
893
210
×
55
21

=
9823
882


(2)(0.34×2400×25%+3×7
1
2
+26.25÷
3
7
)÷25,
=(204+22.5+61.25)÷25,
=287.75÷25,
=11.51.
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