Question

sin     пи(4x-3)/6 = - 1/2

Answer 1

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