osiem dziewiątych - 4 : szesnaście - 10 dwunastych =
14 * 81 - 17 dwudziestych pierwszych : osiem trzecich =
plis pomocy na jutro ;) thx
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1)
8/9 - 4 : 16 - 10/12 =
= 8/9 - 0,25 - 10/12 =
= 8/9 - 1/4 - 10/12 =
= 32/36 - 9/36 - 30/36 =
= 23/36 - 30/36 =
= -7/36
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2)
14 * 81 - 17/21 : 8/3 =
= 1134 - 17/21 * 3/8 =
= 1134 - 17/56 =
= 1133 i 56/56 - 17/56 =
= 1133 i 39/56