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9 1/2-1 3/4=7 3/4
7 3/4-1 3/4=6
6-1 3/4 =4 1/4
9 1/2+7 3/4+6+4 1/4=27,5
7,75-1,75=6
6-1,75=4,25
te liczby to: 9,5; 7,75; 6; 4,25.
9,5+7,75+6+4,25=27,5
odp. Suma tych liczb to 27,5
IV liczba - 9 1/2 = 9 i 2/4
III liczba - 7 i 3/4
II liczba - 6
I liczba - 4 i 1/4
suma: 4 i 1/4 + 6 + 7 i 3/4 + 9 i 2/4= 27 i 1/2