要简算的,谢谢
3个回答
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(1)9/4-(5/17+12/17)
=9/4-1
5/4
(2)34/3+2/3+9/10
=12+9/10
=129/10
(3)99*0.86+0.86
=(99+1)*0.86
=86
(4)2-8/11+3/22
=2-16/22+3/22
=2-13/22
=31/22
(5)9-0.35+1.1
=6.6
(6)3/7+3/5-1/10
=30/70+42/70-7/70
=65/70
=13/14
(7)2/9+7/9+1/4+3/4
=2
(8)3/20+8/15+7/15
=3/20+1
=3/20+20/20
23/20
=9/4-1
5/4
(2)34/3+2/3+9/10
=12+9/10
=129/10
(3)99*0.86+0.86
=(99+1)*0.86
=86
(4)2-8/11+3/22
=2-16/22+3/22
=2-13/22
=31/22
(5)9-0.35+1.1
=6.6
(6)3/7+3/5-1/10
=30/70+42/70-7/70
=65/70
=13/14
(7)2/9+7/9+1/4+3/4
=2
(8)3/20+8/15+7/15
=3/20+1
=3/20+20/20
23/20
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