If l:m =1 1/2 : 1 3/4 and m:n= 2 1/3 : 4 1/5. Find l:m:n. Pls help?
回答 (4)
2016-06-30 12:05 pm
✔ 最佳答案
l : m =1 1/2 : 1 3/4l : m = 3/2 : 7/4
l : m = 6/4 : 7/4
l : m = 6 : 7
l : m = 6×5 : 7×5
l : m = 30 : 35
m : n = 2 1/3 : 4 1/5
m : n = 7/3 : 21/5
m : n = 35/15 : 63/15
m : n = 35 : 63
Hence, l : m : n = 30 : 35 : 63
2016-06-30 12:59 pm
L:M is 6/4: 7/4 or 6:7
M:N is 7/3: 21/5 or 5:9
make value of m common to both expressions equal and you can bring them together.
30: 35: 63
M:N is 7/3: 21/5 or 5:9
make value of m common to both expressions equal and you can bring them together.
30: 35: 63
2016-06-30 12:34 pm
1 1/2 = 3/2
1 3/4 = 7/4
l/ m = (3/2) /(7/4)
l/m = (3/2)(4/7)
l / m = 12/14
l/m = 6/7
l/m = 30/35
l:m = 30:35
2 1/3 = 7/3
4 1/5 = 21/5
m:n = (7/3)/(21/5)
m:n = (7/3)(5/21)
m:n = 35/63
l:m:n = 30:35:63
1 3/4 = 7/4
l/ m = (3/2) /(7/4)
l/m = (3/2)(4/7)
l / m = 12/14
l/m = 6/7
l/m = 30/35
l:m = 30:35
2 1/3 = 7/3
4 1/5 = 21/5
m:n = (7/3)/(21/5)
m:n = (7/3)(5/21)
m:n = 35/63
l:m:n = 30:35:63
2016-06-30 12:28 pm
Relate both to m then multiply by common denominator to give integers
l:m = (3/2)/(7/4) = 6/7
n/m = (21/5)/ (7/3) = 9/5
l:m:n = 6/7 : 1 : 9/5 = 30 : 35 : 63
l:m = (3/2)/(7/4) = 6/7
n/m = (21/5)/ (7/3) = 9/5
l:m:n = 6/7 : 1 : 9/5 = 30 : 35 : 63
收錄日期: 2021-04-18 15:16:09
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