zadanie 49 strona 14 klasa 6 zbiór zadanie (D.) (ułamki zwykłe)
1 i 1/3 * ( 3 + 2 * 3/4 )
1⅓ · (3 + 2 · ¾) = 1⅓ · 4½ = 6
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1⅓ · (3 + 2 · ¾) = 1⅓ · 4½ = 6