
19/17-(3/18+1/24)等于?
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19/17-(3/18+1/24)
=1+2/17-(12/72+3/72)
=2/17+1-15/72
=2/17+1-5/24
=2/17+19/24
=(2×24+17×19)/(17×24)
=371/408
=408分之371
=1+2/17-(12/72+3/72)
=2/17+1-15/72
=2/17+1-5/24
=2/17+19/24
=(2×24+17×19)/(17×24)
=371/408
=408分之371
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