[﹙﹣6﹣9/2﹚÷19/4]÷[﹙2﹣10/3﹚×6/5] ﹙﹣2.3﹚×﹙＋3.85﹚＋﹙﹣4.3﹚×﹙3.85﹚＋

[﹙﹣6﹣9/2﹚÷19/4]÷[﹙2﹣10/3﹚×6/5] ﹙﹣2.3﹚×﹙＋3.85﹚＋﹙﹣4.3﹚×﹙3.85﹚＋8×77/20（要过
寻梦cy 1年前 已收到1个回答 举报
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wzhangh 春芽

共回答了18个问题采纳率：94.4% 举报

[﹙﹣6﹣9/2﹚÷19/4]÷[﹙2﹣10/3﹚×6/5]
=[﹙﹣21/2﹚×4/19]÷[﹙-4/3﹚×6/5]
=[﹣42/19]÷[-8/5]
=(-42/19)×(-5/8)
=210/152
﹙﹣2.3﹚×﹙＋3.85﹚＋﹙﹣4.3﹚×﹙3.85﹚＋8×77/20
=﹣2.3×3.85﹣4.3×3.85＋8×3.85
=(﹣2.3﹣4.3＋8)×3.85
=1.4×3.85
=0.7*7.7
=5.39

1年前

7
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