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(−
5
12
+
2
3
5
6
+
3
8
)×(24×
5
9
−24×
2
9
+24×
2
3
)
人气:124 ℃ 时间:2020-05-24 12:04:29
解答
(−
5
12
+
2
3
5
6
+
3
8
)×(24×
5
9
−24×
2
9
+24×
2
3
)

=(−
5
12
+
2
3
5
6
+
3
8
)×[24×(
5
9
2
9
+
2
3
)]

=(−
5
12
+
2
3
5
6
+
3
8
)×24×1

=
5
12
×24+
2
3
×24−
5
6
×24+
3
8
×24

=-10+16-20+9
=-5
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