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a) (dwa i pięć szóstych) 2 i 5/6 : c = 4 i 1/4
b) 2 i 2/5 * d = 9
17/6:c=17/4
17/6=17/4*c
4*17/6=17c
68/6=17c
68=17*6c
102c= 68
c=68/102
c=34/51
spr:
L=17/6*51/34= 867/204=17/4=P
L=P
12/5*d=9
12d=45
d=45/12
L=12/5*45/12=45/5=9=P
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a) (dwa i pięć szóstych) 2 i 5/6 : c = 4 i 1/4
17/6:c=17/4
17/6=17/4*c
4*17/6=17c
68/6=17c
68=17*6c
102c= 68
c=68/102
c=34/51
spr:
L=17/6*51/34= 867/204=17/4=P
L=P
b) 2 i 2/5 * d = 9
12/5*d=9
12d=45
d=45/12
spr:
L=12/5*45/12=45/5=9=P
L=P
licze na naj