Odpowiedź:
zad.12.
a) 3 i 7/8-1/4= 3 i 7/8- 2/8= 3 i 5/8
b) 6 i 9/16-1/2= 6 i 9/16- 8/16= 6 i 1/16
c) 3 i 7/10-1 i 2/5= 3 i 7/10- 1 i 4/10= 2 i 3/10
d) 6 i 9/14- 2 i 3/7= 6 i 9/14- 2 i 6/14= 4 i 3/14
zad.13
a) 1 i 7/12- 7/30= 1 i 35/60- 14/60= 1 i 21/60= 1 i 7/20
b) 5 i 10/49 - 3/28= 5 i 280/1372- 147/1372= 5 i 133/1372
c) 5 i 11/12 - 1 i 2/7= 5 i 77/84- 1 i 24/84= 4 i 53/84
d) 3 i 7/15- 1 i 1/6= 3 i 14/30- 1 i 5/30= 2 i 9/30= 2 i 3/10
zad.14
a) 3 i 1/6-1/3= 3 i 1/6- 2/6= 2 i 7/6-2/6= 2 i 5/6
b) 6 i 1/12- 2 i 1/2= 6 i 1/12- 2 i 6/12= 5 i 13/12- 2 i 6/12= 3 i 7/12
c) 5 i 1/12- 1 i 2/7= 5 i 7/84- 1 i 24/84= 4 i 91/84- 1 i 24/84= 3 i 67/84
d) 14 i 7/18- 11 i 12/27 = 14 i 21/54- 11 i 24/54= 13 i 75/54- 11 i 24/54=2 i 51/54
zad.15
7 i 1/2-2/5= 7 i 5/10- 4/10= 7 i 1/10 ( pierwsze puste pole)
7 i 1/10- 2/5= 7 i 1/10- 4/10= 6 i 11/10- 4/10= 6 i 7/10 ( drugie puste pole)
6 i 7/10- 2/5= 6 i 7/10-4/10= 6 i 3/10 ( trzecie puste pole)
6 i 3/10- 2/5= 6 i 3/10-4/10= 5 i 13/10-4/10= 5 i 9/10
Szczegółowe wyjaśnienie:
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Odpowiedź:
zad.12.
a) 3 i 7/8-1/4= 3 i 7/8- 2/8= 3 i 5/8
b) 6 i 9/16-1/2= 6 i 9/16- 8/16= 6 i 1/16
c) 3 i 7/10-1 i 2/5= 3 i 7/10- 1 i 4/10= 2 i 3/10
d) 6 i 9/14- 2 i 3/7= 6 i 9/14- 2 i 6/14= 4 i 3/14
zad.13
a) 1 i 7/12- 7/30= 1 i 35/60- 14/60= 1 i 21/60= 1 i 7/20
b) 5 i 10/49 - 3/28= 5 i 280/1372- 147/1372= 5 i 133/1372
c) 5 i 11/12 - 1 i 2/7= 5 i 77/84- 1 i 24/84= 4 i 53/84
d) 3 i 7/15- 1 i 1/6= 3 i 14/30- 1 i 5/30= 2 i 9/30= 2 i 3/10
zad.14
a) 3 i 1/6-1/3= 3 i 1/6- 2/6= 2 i 7/6-2/6= 2 i 5/6
b) 6 i 1/12- 2 i 1/2= 6 i 1/12- 2 i 6/12= 5 i 13/12- 2 i 6/12= 3 i 7/12
c) 5 i 1/12- 1 i 2/7= 5 i 7/84- 1 i 24/84= 4 i 91/84- 1 i 24/84= 3 i 67/84
d) 14 i 7/18- 11 i 12/27 = 14 i 21/54- 11 i 24/54= 13 i 75/54- 11 i 24/54=2 i 51/54
zad.15
7 i 1/2-2/5= 7 i 5/10- 4/10= 7 i 1/10 ( pierwsze puste pole)
7 i 1/10- 2/5= 7 i 1/10- 4/10= 6 i 11/10- 4/10= 6 i 7/10 ( drugie puste pole)
6 i 7/10- 2/5= 6 i 7/10-4/10= 6 i 3/10 ( trzecie puste pole)
6 i 3/10- 2/5= 6 i 3/10-4/10= 5 i 13/10-4/10= 5 i 9/10
Szczegółowe wyjaśnienie: