答案:B
解析:
Multiplying both sides of the equation 24/15 = 4/n by 15 n gives (15n) (24/15) = (15n) (4/n), which simplifies to 24n = (15) (4) = 60. Dividing both sides of the equation 24n = 60 by 6 gives (24n)/6 = 60/6, and so 4n = 10.
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答案:B
解析:
Multiplying both sides of the equation 24/15 = 4/n by 15 n gives (15n) (24/15) = (15n) (4/n), which simplifies to 24n = (15) (4) = 60. Dividing both sides of the equation 24n = 60 by 6 gives (24n)/6 = 60/6, and so 4n = 10.