1. \(\left(-\frac{3}{4}\right)^{3x-2}=\frac{81}{256}\)
\(\left(\frac{-3}{4}\right)^{3x-2}=\left(\frac{-3}{4}\right)^4\)
=> 3x - 2 = 4
=> 3x = 6
=> x = 2
2. \(\left(\frac{1}{2}\right)^{3x-1}=\frac{1}{32}\)
\(\left(\frac{1}{2}\right)^{3x-1}=\left(\frac{1}{2}\right)^5\)
=> 3x - 1 = 5
=> 3x = 6
=> x = 2