能简算的要简算8/9×(5/9-1/4)×8/11 4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)
4/9×(3/10-5/6×3/10)3/8×(3/5-1/3×3/10)帮帮忙吧各位,明天要交作业的...
4/9×(3/10-5/6×3/10) 3/8×(3/5-1/3×3/10)
帮帮忙吧各位,明天要交作业的 展开
帮帮忙吧各位,明天要交作业的 展开
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能简算的要简算
8/9×(5/9-1/4)×8/11
=8/9×(11/36×8/11)
=8/9×2/9
=16/81
4/9×(3/10-5/6×3/10)
=4/9×(3/10-1/4)
=4/9×1/20
=1/45
3/8×(3/5-1/3×3/10)
=3/8×(3/5-1/10)
=3/8×1/2
=3/16
8/9×(5/9-1/4)×8/11
=8/9×(11/36×8/11)
=8/9×2/9
=16/81
4/9×(3/10-5/6×3/10)
=4/9×(3/10-1/4)
=4/9×1/20
=1/45
3/8×(3/5-1/3×3/10)
=3/8×(3/5-1/10)
=3/8×1/2
=3/16
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追问
第一个不对啊,答案上写四分之1
追答
那是你的题目有问题,应该是:
9/8×(5/9-1/4)×8/11
=9/8×(11/36×8/11)
=9/8×2/9
=1/4
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