1/2x3x4x5+1/2x2x6x7的和化簡為最簡分數q/p(p丶q為正整數),則p丶q之值分別為多少?

2017-07-13 10:09 am

回答 (1)

2017-07-13 12:16 pm
✔ 最佳答案
1/(2x3x4x5)+1/(2x2x6x7)的和化簡為最簡分數q/p(p丶q為正整數),則p丶q之值分別為多少?
Sol
[2*3*4*5,2*2*6*7]
=2*[3*4*5,2*6*7]
=4*[3*2*5,6*7]
=8*[3*5,3*7]
=24*[5.7]
=24*5*7
=840
1/(2x3x4x5)+1/(2x2x6x7)
=1/120+1/168
=7/840+5/840
=12/840
=1/70
q=1,p=70


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