x + 3x/12 -(x-1)/2 = -4x
12x + 3x - 6(x-1) = -48x (multiply through by LCD 12 to clear out denominators0
15x - 6x + 6 = -48x (combine like terms and distribute)
9x + 6 = -48x (simplify)
6 = -57x (simplify)
-6/57 = x (solve for x)
-2/19 = x (reduce fraction)