14乘以5分之4乘以7分之6怎么算列出算式,最简方法 25
57乘以56/3,(12/7+18/11)乘以36,13/15乘以7/3乘以7,25/14乘以21+4乘以25/14,(1-2/1)乘以(1-3/1)乘以(1-4/1)乘...
57乘以56/3,(12/7+18/11)乘以36,13/15乘以7/3乘以7,25/14乘以21+4乘以25/14,(1-2/1)乘以(1-3/1)乘以(1-4/1)乘以(1-5/1)乘以.....乘以(1-2008/1)拜托了,我会加分,明天就要交上去了,急呀~~~~
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14×4/5×6/7
=48/5
=9.6
=48/5
=9.6
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57乘以3/56
=(56+1)*3/56
=3+3/56
=3又3/56
(7/12+11/18)乘以36
=7/12*36+11/18*36
=21+22
=43
13/15乘以3/7乘以7
=13/15*3
=13/5
14/25乘以21+4乘以14/25
=14/25*(21+4)
=14/25*25
=14
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以.....乘以(1-1/2008)
=1/2*2/3*3*4*4/5*……*2007/2008
=1/2008
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57乘以3/56
=(56+1)*3/56
=3+3/56
=3又3/56
(7/12+11/18)乘以36
=7/12*36+11/18*36
=21+22
=43
13/15乘以3/7乘以7
=13/15*3
=13/5
14/25乘以21+4乘以14/25
=14/25*(21+4)
=14/25*25
=14
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以.....乘以(1-1/2008)
=1/2*2/3*3*4*4/5*……*2007/2008
=1/2008
=(56+1)*3/56
=3+3/56
=3又3/56
(7/12+11/18)乘以36
=7/12*36+11/18*36
=21+22
=43
13/15乘以3/7乘以7
=13/15*3
=13/5
14/25乘以21+4乘以14/25
=14/25*(21+4)
=14/25*25
=14
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以.....乘以(1-1/2008)
=1/2*2/3*3*4*4/5*……*2007/2008
=1/2008
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57乘以3/56
=(56+1)*3/56
=3+3/56
=3又3/56
(7/12+11/18)乘以36
=7/12*36+11/18*36
=21+22
=43
13/15乘以3/7乘以7
=13/15*3
=13/5
14/25乘以21+4乘以14/25
=14/25*(21+4)
=14/25*25
=14
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以.....乘以(1-1/2008)
=1/2*2/3*3*4*4/5*……*2007/2008
=1/2008
=(56+1)*3/56
=3+3/56
=3又3/56
(7/12+11/18)乘以36
=7/12*36+11/18*36
=21+22
=43
13/15乘以3/7乘以7
=13/15*3
=13/5
14/25乘以21+4乘以14/25
=14/25*(21+4)
=14/25*25
=14
(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以.....乘以(1-1/2008)
=1/2*2/3*3*4*4/5*……*2007/2008
=1/2008
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