kka tolong bantu no 4? terima kasih

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[81/27^(3-x)]^1/3 = (1/9)^(x - 3/2)
[3^4 / 3^3(3 - x)]^1/3 = 3^-2(x - 3/2)
3^(4 - 3(3 - x))/3 = 3^(-2x + 3)
(4 - 3(3 - x))/3 = -2x + 3
4 - 9 + 3x = 3(-2x + 3)
-5 + 3x = -6x + 9
9x = 14
x = 14/9