Bài 6. Tìm x a) \( \left(\frac{3}{5}\right)^x = \frac{27}{125} \) b) \( -\frac{4}{3} x - \frac{1}{2} = 1,25 \) c) \( 5^{\frac{1}{2}} - \frac{1}{2}(2x + 1) = \frac{1}{2} \) d) \( \left(\frac{2}{5} - 3x\right)^2 - \frac{1}{5} = \frac{4}{25} \) Bài 7. Tìm x a) \( \left(\frac{4}{5}\right)^5 : x = \left(-\frac{4}{5}\right)^4 \) b) \( \left(x - \frac{5}{2}\right)^3 = -\frac{1}{8} \)

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Bài 6. Tìm x
a) \( \left(\frac{3}{5}\right)^x = \frac{27}{125} \)
b) \( -\frac{4}{3} x - \frac{1}{2} = 1,25 \)
c) \( 5^{\frac{1}{2}} - \frac{1}{2}(2x + 1) = \frac{1}{2} \)
d) \( \left(\frac{2}{5} - 3x\right)^2 - \frac{1}{5} = \frac{4}{25} \)

Bài 7. Tìm x
a) \( \left(\frac{4}{5}\right)^5 : x = \left(-\frac{4}{5}\right)^4 \)
b) \( \left(x - \frac{5}{2}\right)^3 = -\frac{1}{8} \)