解答下面问题
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18/35X3/5X2/3
=18/35X5/3X2/3
=2/7X2
=4/7
5/17X1/9+1/9x12/17
=(1/17X1/9)(5+12)
=(1/17X1/9)17
=1/9
2-6/13X26/9-2/3
=2-2X2/3-2/3
=2-4/3-2/3
=2-2
=0
(15-14X4/7)X8/21
=(15-8)X8/21
=7X8/21
=8/3
87X3/86
=(86+1)X3/86
=3+3/86
=3又86分子3
4/5÷[(1/3+2/5)X4/11]
=4/5÷[(11/15)X4/11]
=4/5÷4/15
=4/5X15/4
=3
=18/35X5/3X2/3
=2/7X2
=4/7
5/17X1/9+1/9x12/17
=(1/17X1/9)(5+12)
=(1/17X1/9)17
=1/9
2-6/13X26/9-2/3
=2-2X2/3-2/3
=2-4/3-2/3
=2-2
=0
(15-14X4/7)X8/21
=(15-8)X8/21
=7X8/21
=8/3
87X3/86
=(86+1)X3/86
=3+3/86
=3又86分子3
4/5÷[(1/3+2/5)X4/11]
=4/5÷[(11/15)X4/11]
=4/5÷4/15
=4/5X15/4
=3
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