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zad.68 a)4*4,75+4*1,3+4*3,1=19+5,2+12,4=36,6 b)4*3,5+4*1,5+4*4=14+6+16=36
zad.69
a)1/4 ; 0,6
1/4=0,25
1/4<0,6
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5,8 ; 5 1/2
5 1/2=5,5
5,8>5 1/2
b)11,4 ; 11 2/5
11 2/5=11,4
11,4=11 2/5
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7,12 ; 7 3/25
7 3/25=7,12
7,12=7 3/25
zad.70
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