Sin пи(4x-3)/6 = - 1/2
Sin (π(4x-3))/6 = - 1,2 π(4x-3)/6 = -π/6 π(4x-3)/6 = -5π/6 4x-3 = -1 4x-3 = -5 4x = 2 4x = -2 x = 1/2 x = -1/2