cw 48 -----> ulamki pietrowe J)1/2/1/3 K)4/5/2/3 L)5/7/3/7 i cw49 A) 9 1/2 * 1 1/8 : 2 2/3= b) 5 20/21:5 5/9 * 1 19/30 c)8 1/3: 16 2/3 :3 1/2 prosilbym zeby bylo rozpisane * <--- pomnozyc : <---- podzielic
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ćw 48
J)1/2/1/3=1/2 * 3/1=3/2=1,5
K)4/5/2/3=4/5 * 3/2=12/10=1,2
L)5/7/3/7=5/7 * 7/3=5/3
ćw 49
A)9 1/2 * 1 1/8 :2 2/3=19/2 * 9/8 * 8/3=19/2 * 3=57/2=28 1/2
b)5 20/21 :5 5/9 * 1 19/30=125/21 * 9/50 * 49/30=5/7 * 3/2 * 49/30=15/14 * 49/30=
=49/28= 1 21/28
c)8 1/3: 16 2/3 :3 1/2=25/3 * 3/50 * 2/7= 1/2 * 2/7= 1/7