вычислите 7/12-1/3/1/2-2/5
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Ответил svetazuna
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(7/12 - 1/3) / (1/2 - 2/5) =
= (7/12 - 4/12) / (5/10 - 4/10) =
= (3/12) / (1/10) = 3/12 * 10/1 =
= 5/2 = 2 1/2
= (7/12 - 4/12) / (5/10 - 4/10) =
= (3/12) / (1/10) = 3/12 * 10/1 =
= 5/2 = 2 1/2
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