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(x+3X-32)*3/7=3X-32 To build two houses, the cost of the first one is 320000 yuan less than three times that of the second one, and the cost of the second one accounts for 3 / 7 of the total cost of the two houses. How much is the cost of the second one? It's urgent
Suppose the cost of the first house is x ten thousand yuan, and that of the second house is y ten thousand yuan, 3y-32 = x 3 / 7 (x + y) = y y = 19.2
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