Odpowiedź:
a) 9 i 1/5 -3 i 7/9= 9 i 9/45 - 3 i 35/34= 8 i 54/45 - 3 i 35/45=
=5 i 19/45
b) 12 i 1/2 + 5 i 9/10 + 4 i 2/3= 12 i 15/30 + 5 i 27/30 + 4 i 20/30=
=21 i 62/30= 23 i 2/30= 23 i 1/15
c) 1586 i 134/268 - 1585 i 3/4= 1586 i 1/2 - 1585 i 3/4=
= 1586 i 2/4- 1585 i 3/4= 1585 i 6/4- 1585 i 3/4= 3/4
Szczegółowe wyjaśnienie:
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Odpowiedź:
a) 9 i 1/5 -3 i 7/9= 9 i 9/45 - 3 i 35/34= 8 i 54/45 - 3 i 35/45=
=5 i 19/45
b) 12 i 1/2 + 5 i 9/10 + 4 i 2/3= 12 i 15/30 + 5 i 27/30 + 4 i 20/30=
=21 i 62/30= 23 i 2/30= 23 i 1/15
c) 1586 i 134/268 - 1585 i 3/4= 1586 i 1/2 - 1585 i 3/4=
= 1586 i 2/4- 1585 i 3/4= 1585 i 6/4- 1585 i 3/4= 3/4
Szczegółowe wyjaśnienie: