己知1/2a:1/3b=1:2,b:c=2:3,求a:b:c
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己知1/2a:1/3b=1:2,b:c=2:3,求a:b:c
己知1/2a:1/3b=1:2,b:c=2:3,求a:b:c
己知1/2a:1/3b=1:2,b:c=2:3,求a:b:c
1/2a:1/3b=1:2
1/2a×2=1/3b×1
a=1/3b
b:c=2:3
c=3/2b
a:b:c=1/3b:b:3/2b=2:6:9