> 数学 >
(5.87+1
5
14
+2.13+
9
14
)×(2
3
4
−1.75)+(1÷
2
7
−3.5)×3.99
人气:463 ℃ 时间:2019-11-20 13:17:11
解答
(5.87+1
5
14
+2.13+
9
14
)×(2
3
4
-1.75)+(1÷
2
7
-3.5)×3.99,
=[(5.87+2.13)+(1
5
14
+
9
14
)]×(2.75-1.75)+(
7
2
-3.5)×3.99,
=[8+2]×1+(3.5-3.5)×3.99,
=10×1+0,
=10.
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