mam tu pare zadan z matmy:
1.oblicz iloczyn,wynik zapisz w postaci liczby mieszanej.
5x2/3
3x9/20
3/5x7
6/13x7
8/9x5
2.oblicz iloczyn,zamieniajac liczbe mieszana na ulamek niewlasciwy.wynik zapisz w postaci liczby mieszanej.
5x3cale i 2/3
2x5calych i 2/5
1caly i 3/7x5
5 calych i 1/3x10
3x3 cale i 3/8
6calych i 1/4x5
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1.
5x2/3 = 10/3=3 1/3
3x9/20=27/20=1 7/20
3/5x7=21/5=4 1/5
6/13x7 = 42/13 = 3 3/13
8/9x5 = 40/9 = 4 4/9
2.
5x3cale i 2/3 = 5 x 11/3=55/3=18 1/3
2x5calych i 2/5 = 2x27/5=54/5=10 4/5
1caly i 3/7x5=10/7 x 5=50/7=7 1/7
5 calych i 1/3x10 =16/3x10=160/3= 53 1/3
3x3 cale i 3/8 = 3 x 27/8 = 81/8 = 10 1/8
6calych i 1/4x5 = 25/4 x 5 = 125/4 = 31 1/4