Zapisz w prostszej postaci: a) 6y – 5y + 4y =
b) -7 + 3a + 9 – 8a =
c) 0,6 x – 0,6 – x – 2,5 x =
b) -7 + 3a + 9 – 8a =
c) 0,6 x – 0,6 – x – 2,5 x =
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