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20:1/5=20/1:1:=4 3/4:1/4=3/4*4/1=3/1=3 3/5:3/5=3/5*5/3=1
3 2/3:2 3/4=11/3:11/4=11/3:4:11=44/33=1 1/3
34/7:2 3/7=7/34:17/7=1/2
2tabelka=3,1
3tabelka=1/2, 5, 1 1/2, 1 /13
Obliczenia:
9/18=1/2
1 : 1/5= 1*5/1=5
5 1/2 : 3 2/3= 1 1/2
20*1/5=4
3/4 ; 1/4 = 3
3/5 : 3/5 = 1
3 2/3 : 2 3/4=11/3 : 11/4 = 1
2 3/7*7/34= 17/7*7/34= 1/2
Mam napewno wszystko dobrze bo niedawno to miałam i jest OK ;))