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b) 1 3/8 : 3/4 : 1 2/9 = 11/8 x 4/3 x 9/11 = 3/2
c)1 5/6 : 3 2/3 x 1 1/7 = 11/6 : 11/3 x 8/7 = 11/6 x 3/11 x 8/7 = 8/14 = 1 6/14
d) (1/2) 3 x 2 2/3 : 1 1/6 = 1/2 x 3 x 8/3 x 7/6=3/2 x 8/3 x 7/6 = 28 / 6
e)1 1/4 x 6 - 3 : 1 / 15 = 5/4 x 6 - 3 : 6/5 = 30/4 - 3 : 6/5 = 30/4 - 3/1 x 5/6 = 50/8 - 3/1 = 50/8 + 1/3 = 51/11
f) (4 3/8 - 1 2/3 ) : 3/34 = (35/8 - 5/3 ) : 15 / 4 =35/8 + 3/5 = 38/13 x 4/15= 152/195 = 1 43/195
Mam nadzieję że pomogłam i liczę na naj :)