第1个回答 2013-04-30
(10/1+5/3)(9/2-15/2)=（10+5/3）（9-15/2）=(30/3+5/3)(-6/2)=35/3乘（-3）=-35
第2个回答 推荐于2016-12-01
( 1/10 + 3/5 )( 2/9 - 2/15 )
= 1/5 X ( 1/2 + 3 )( 1/3 - 1/5 ) X 2/3
= ( 1/3 + 2 )( 1/15 - 1/25 )
= ( 1/3 + 6/3 )( 5/75 - 3/75 )
= 7/3 X 2/75
= 21 / 225
( 10/1 + 5/3 )( 9/2 - 15/2 )
= 5 X ( 2 + 1/3 )( 3 - 5 ) X 3/2
= 15/2 X 7/3 X (-2)
= -5 X 7
= -35本回答被提问者和网友采纳
= 1/5 X ( 1/2 + 3 )( 1/3 - 1/5 ) X 2/3
= ( 1/3 + 2 )( 1/15 - 1/25 )
= ( 1/3 + 6/3 )( 5/75 - 3/75 )
= 7/3 X 2/75
= 21 / 225
( 10/1 + 5/3 )( 9/2 - 15/2 )
= 5 X ( 2 + 1/3 )( 3 - 5 ) X 3/2
= 15/2 X 7/3 X (-2)
= -5 X 7
= -35本回答被提问者和网友采纳
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