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