Odpowiedź :
a)
6/9 = 2/3 = 8/12
5/10 = 1/2 = 6/12
12/16 = 3/4 = 9/12
10/15 = 2/3 = 8/12
b)
33/44 = 3/4 = 15/20
24/32 = 3/4 = 15/20
9/18 = 1/2 = 10/20
18/45 = 2/5 = 8/20
A)6/9=6:3/9:3=2/3=2•4:3•4=8/12
5/10=5:5/10:5=1/2=1•6/2•6=6/12
12/16=12:4/16:4=3/4=3•3/4•3=9/12
10/15=10:5/15:5=2/3=2•4/3•4=8/12
B jest w załączniku
5/10=5:5/10:5=1/2=1•6/2•6=6/12
12/16=12:4/16:4=3/4=3•3/4•3=9/12
10/15=10:5/15:5=2/3=2•4/3•4=8/12
B jest w załączniku