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已知a:b=3:5,b:c=6:7,则a:b:c=______.
人气:198 ℃ 时间:2020-06-22 03:57:16
解答
因为a:b
=3:5
=(3×6):(5×6)
=18:30,
b:c
=6:7
=(6×5):(7×5)
=30:35,
所以a:b:c=18:30:35.
故答案为:18:30:35.
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