Rozwiąż równania:
a) 9x + 7 = 9x - 11
b)2(x + 2) = 5(x - 1)
c)2(5x - 1)= 8
a) 9x + 7 = 9x - 11
b)2(x + 2) = 5(x - 1)
c)2(5x - 1)= 8
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