Determinan 3x3 nomor 1 bntu jawab ya

Det A = -8

Det A = (1)(-5)(-2) + (-2)(2)(-1) + (0)(x)(3) - (0)(-5)(-1) - (-2)(x)(-2) - (1)(2)(3)
          = 10 + 4 + 0 - 0 - 4x - 6
          = 8 - 4x

8 - 4x = -8
4x = 16
x = 4

2x - 3 = 2(4) - 3
          = 8 - 3 = 5