b)5i1/7 razy 1i4/9 -6 : 4i2/3=
c)3i1/2 razy(2i1/4 - 1i1/2 : 6)=
np:3i5/6-5/6 to ułamki a 3 to całości!
B) 5 i 1/7 razy 1i 4/9-6 : 4i2/3= 36/7 razy 13/9 - 6/1 razy3/14=52/7-18/14= 104/14- 18/14= 86/14= 6 i 2/14
C) 3i1/2 razy(2i1/4 - 1i1/2 : 6)= 7/2 razy ( 9/4 - 1/4)= 7/2 razy 8/4= 28/4 = 7
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B) 5 i 1/7 razy 1i 4/9-6 : 4i2/3= 36/7 razy 13/9 - 6/1 razy3/14=52/7-18/14= 104/14- 18/14= 86/14= 6 i 2/14
C) 3i1/2 razy(2i1/4 - 1i1/2 : 6)= 7/2 razy ( 9/4 - 1/4)= 7/2 razy 8/4= 28/4 = 7
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