Rozwiąż równania : 2x - 3 + x = 9
3x - 5 - x = 11
x - 5 + 6 * x = 16
3 * x - 4 - 2 * x = 16
3x - 5 - x = 11
x - 5 + 6 * x = 16
3 * x - 4 - 2 * x = 16
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