Respuesta:
[tex]x - ( - 2x + 6) = 12 \\ - 2x + 6 - x = 12 \\ - 2x + 6 = 12 \\ x + 6 = \frac{12}{2} = 6 \\ respuesta \\ x = 6[/tex]
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Respuesta:
[tex]x - ( - 2x + 6) = 12 \\ - 2x + 6 - x = 12 \\ - 2x + 6 = 12 \\ x + 6 = \frac{12}{2} = 6 \\ respuesta \\ x = 6[/tex]