17/8-(9/5-17/9)简便计算,是多少?
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517/8-(9/5-17/9)
=45×17/360-72×9/360+17×40/360
=765/360-648/360+680+/360=(765-648+680)/360
=797/360
=45×17/360-72×9/360+17×40/360
=765/360-648/360+680+/360=(765-648+680)/360
=797/360
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17/8-(9/5-17/9)
=17/8-9/5+17/9
=17/8+17/9-9/5
=(17×9+17×8)/72-9/5
=289/72-9/5
=(289×5)/360-(9×72)/360
=1445/360-648/360
=797/360
=17/8-9/5+17/9
=17/8+17/9-9/5
=(17×9+17×8)/72-9/5
=289/72-9/5
=(289×5)/360-(9×72)/360
=1445/360-648/360
=797/360
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17/8-(9/5-17/9)
=17/8-9/5+17/9
=153/72-9/5+136/72
=(153/72+136/72)-9/5
=289/72-9/5
=1445/360-648/360
=797/360
=17/8-9/5+17/9
=153/72-9/5+136/72
=(153/72+136/72)-9/5
=289/72-9/5
=1445/360-648/360
=797/360
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17/8-(9/5-17/9)
=17/8-9/5+17/9
=153/72-9/5+136/72
=(153/72+136/72)-9/5
=289/72-9/5
=1445/360-648/360
=797/360
=17/8-9/5+17/9
=153/72-9/5+136/72
=(153/72+136/72)-9/5
=289/72-9/5
=1445/360-648/360
=797/360
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8/17-(5/9-9/17)
=8/17-5/9+9/17
=8/17+9/17-5/9
=1-5/9
=4/9
=8/17-5/9+9/17
=8/17+9/17-5/9
=1-5/9
=4/9
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