oblicz i wynik zapisz jak najprościej ułamki ; a) 31/4 -11/2 +27/8= b) 5/6:2/9 = 21*11/14 = 6:21/4 = 12/5*31/3 = 33/10 : 11= 31/3:41/3 =
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a) 31/4 -11/2 +27/8= 62/8-88/8+27/8=-26/8+27/8=1/8
b) 5/6:2/9 = 5/6x9/2=45/12=3 9/12=3 3/4
c)21*11/14 = 231/14=16 7/14=16 1/2
d)6:21/4 = 6x4/21=24/21= 1 3/21=1 1/7
e)12/5*31/3 = 372/15=24 12/15=24 4/5
f)33/10 : 11= 3,3:11=0,3
g)31/3:41/3 =31/3x3/41=93/123=3/41
Myślę, że dobrze :)