Re: [中學] 解不出X和Y

[Honor1984 (奈何上天造化弄人？)]

※ 引述《OmeletteOOO (歐姆雷歐歐歐)》之銘言：
: 算了好久還是算不出解答答案...
: 請問答案是要怎麼解呢?
: 因為數學底差，還請過程不要跳太多步驟
: 感謝善心人士!
: https://imgur.com/a/2PYHz

P_x X + (b/a) P_x X = M

=> P_x X [(a + b)/a] = M

=> X = [a/(a + b)](M / P_x)

Y = (b/a) P_x X / P_y

  = (b/a)[Ma/(a + b)]/P_y

  = [b/(a + b)](M / P_y)

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推 OmeletteOOO : 感謝!