Odpowiedź:
c) 10 1/6 - (12 3/4 - 7 5/6) - 3 1/2 = = 61/6 - (12 9/12 - 7 10/12) - 7/2 =
122/12 - (153/12 - 94/12) - 42/12 = 122/12 - 59/12 - 42/12 = 21/12 = 7/4 = 1 3/4
d) 1 3/4 + (99 7/20 - 89 2/5) - 1 1/2 = 7/4 + (98 27/20 - 89 8/20) - 3/2 =
35/20 + 9 19/20 - 30/20 = 9 19/20 + 5/20 = 9 24/20 = 10 4/20 = 10 1/5
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Szczegółowe wyjaśnienie:
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Odpowiedź:
c) 10 1/6 - (12 3/4 - 7 5/6) - 3 1/2 = = 61/6 - (12 9/12 - 7 10/12) - 7/2 =
122/12 - (153/12 - 94/12) - 42/12 = 122/12 - 59/12 - 42/12 = 21/12 = 7/4 = 1 3/4
d) 1 3/4 + (99 7/20 - 89 2/5) - 1 1/2 = 7/4 + (98 27/20 - 89 8/20) - 3/2 =
35/20 + 9 19/20 - 30/20 = 9 19/20 + 5/20 = 9 24/20 = 10 4/20 = 10 1/5
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Szczegółowe wyjaśnienie: