dau coroana vă rogggg!!!!!
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Răspuns:
[tex]4x - 2(x + 7) = 2x - 2(x + 1) \\ 4x - 2x - 14 = 2x - 2x - 2 \\ 2x - 14 = - 2 \\ 2x = 14 - 2 \\ 2x = 12 \\ x = \frac{12}{2} = 6[/tex]