13/18+4/81+7/18+41/81== решите удобным способом
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Ответил svetazuna
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13/18 + 4/81 + 7/18 + 41/81 =
= (13/18 + 7/18) + (4/81 + 41/81) =
= 20/18 + 45/81 =
= 10/9 + 5/9 =
= 15/9 = 5/3 = 1 2/3
= (13/18 + 7/18) + (4/81 + 41/81) =
= 20/18 + 45/81 =
= 10/9 + 5/9 =
= 15/9 = 5/3 = 1 2/3
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