Oblicz: 2 2/3-1 9/12+3 10/15 i proszę o wytłumaczenie.
2 i 2/3 - 1 i 9/12 + 3 i 10/15 = 2 i 2/3 - 1 i 3/4 + 3 i 2/3 =
5 i 4/3 - 1 i 3/4 = 6 i 1/3 - 1 i 3/4 = 6 i 4/12 - 1 i 9/12 =
5 i 16/12 - 1 i 9/12 = 4 i 7/12
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2 i 2/3 - 1 i 9/12 + 3 i 10/15 = 2 i 2/3 - 1 i 3/4 + 3 i 2/3 =
5 i 4/3 - 1 i 3/4 = 6 i 1/3 - 1 i 3/4 = 6 i 4/12 - 1 i 9/12 =
5 i 16/12 - 1 i 9/12 = 4 i 7/12