Oblicz, pamiętając o skracaniu
a) 36 * 11/45 =
b)23/25 * 15 =
c) 18 * 5/27
d) 13/90 * 18 =
i) 19/42 * 28 =
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ps to jest * mnożenie a to / kreka ułamkowa
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a) 36*11/45=4*11/5=44/5= 8 4/5
b) 23/25*15=23/5*3=69/5=13 4/5
c) 18*5/27=2*5/3=10/3=3 1/3
d) 13/90*18=13/10*2=23/10= 2 3/10
i) 19/42*28= 19/21*14=266/21=252 14/21= 252 2/3
a) 36 * 11/45 = 4 * 11/5 = 44/5 = 8 i 4/5
b)23/25 * 15 = 23/5 * 3 = 69/5 = 13 i 4/5
c) 18 * 5/27 = 2 * 5/3 = 10/3 = 3 i 1/3
d) 13/90 * 18 = 13/10 * 2 = 13/5 = 2 i 3/5
i) 19/42 * 28 = 19/3 * 2 = 38/3 = 12 i 2/3