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b) 3/5 z 2 2/5= 3/5 * 12/5= 36/25
c) 4/7 z 16 1/3= 4/7 * 49/3= 196/21=9 7/21= 9 1/3
d) 1 1/2 z 30= 3/2 * 30= 1/2* 10= 1/20
e) 1 1/3 z 10 1/2= 4/3 * 21/2= 4* 7/2= 28/2= 14
f) 3 1/3 z 8 1/8= 10/3* 65/8= 5/3* 65/4= 325/12= 271/12
Mam nadzieję, że pomogłam ;)