May 2022 1 8 Report
-5 + 4y + 4 + (-5y) =
3x – 5 + 3x + 6 =
z – 6z - 3 + 5z =
20x – 5 + 4x – 27
0,6x – 0,6 – x – 2,5 =
0,5 x – 2x – 0,4 – x =
Marek ma x książek, zaś Darek o 6 więcej książek . Ile mają razem książek?


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