Объяснение:
а/12 + b/6 = a/12 + 2*b/2*6 = a/12 + 2b/12 =
(a + 2b)/12
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Объяснение:
а/12 + b/6 = a/12 + 2*b/2*6 = a/12 + 2b/12 =
(a + 2b)/12