1) 7\12 : 7\50 = 50\12
2) 50 : 4 4\5 = 50\1 : 24\5 = 250\24
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50Y \ 12 = 250X \ 24
100Y \ 24 = 250X \ 24
100Y = 250X
Y = 2.5X
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X \ Y = 100 \ 250 = 0.4
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Ответ Х \ Y = 0.4