2/3x-1/4= 1/12(3x+3)-3

[tex]( \frac{2}{3} x \: - \frac{1}{4} ) \times 12 = (3x + 3) \times -3[/tex]
[tex]8x - 3 = -9x - 9[/tex]
[tex]17x = -6[/tex]
[tex]x = \frac{ -6}{17} [/tex]