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Mam nadzieję, że pomogłam :) Liczę na naj :D
17/18 - 5/27=
= 51/54 - 10/54 = 41/54
b)
1 cała i 5/12 - 3/8=
= 1 10/24 - 9/24 = 1 1/24
c)
2 całe i 7/9 - 5/6=
= 2 14/18 - 15/18 = 1 32/18 - 15/18 = 1 17/18
d)
5 całych i 19/32 - 3 całe i 1/18 =
= 5 342/576 - 3 32/576 = 2 310/576 = 2 155/288