4. Które równanie ma nieskończenie wiele rozwiązan? * 5 + 3.x = 3x
7.x = -7x
2(x - 4) = 2x - 6
6x - 5 = 2.x - (5 - 4.x)
7.x = -7x
2(x - 4) = 2x - 6
6x - 5 = 2.x - (5 - 4.x)
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