若a:b=5:4 和 b:c=6:5 ,求a:b:c
b:c=6:5
a:b = 5:4
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a:b:c =????
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a:b = 5:4 ......... (1)
b:c = 6:5 ..........(2)
(1) x 3
(2) x 2
a:b = 15:12
b:c= 12:10
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a:b:c=15:12:10
a:b =5:4
b:c= 6:5
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a:b:c = 30:24:20 = 15:12:10
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Verified answer
a:b = 5:4 ......... (1)
b:c = 6:5 ..........(2)
(1) x 3
(2) x 2
a:b = 15:12
b:c= 12:10
-------------------------------
a:b:c=15:12:10
a:b =5:4
b:c= 6:5
---------------------'
a:b:c = 30:24:20 = 15:12:10