Oblicz: a) 4 1/2:6+3 2/3 b)(5 1/3-2 2/5):2 c)(5 1/2-3 2/4)²:7

4 1/2:6+3 3/2=9/2*1/6+11/3=3/2*1/2+11/3=3/4+11/3=9/12+44/12=396/12=33 (5 1/3-2 2/5):2=(16/3-12/5):2=(80/15-36/15):2=44/15*1/2=22/15*1/1=22/15=1 7/15 (5 1/2-3 2/4)do kwadratu :7=(11/2-14/4)do kwadratu :7=(22/4-14/2) do kwadratru :7=(8/4)do kwadratu :7=64/16*1/7=64/112=8/14=4/7