linsid27 linsid27
  • 22-12-2019
  • Mathematics
contestada

Evaluate for x:
(5/3)^x-8 = (27/125)^2x-3
Please and thank you!!

Respuesta :

skumari skumari
  • 22-12-2019

Answer:

x = 17/7

Step-by-step explanation:

Given-

[tex](\frac{5}{3} )^{x - 8}[/tex] = [tex]( \frac{27}{125} ) ^{2 x - 3}[/tex]

[tex](\frac{5}{3} )^{x - 8}[/tex] = [tex]((\frac{3}{5} ) ^{3}) ^{2 x - 3}[/tex]

[tex](\frac{5}{3} )^{x - 8}[/tex] = [tex](( \frac{5}{3} ) ^{(-3)})^{2 x - 3}[/tex]

[tex](\frac{5}{3} )^{x - 8}[/tex]  = [tex](\frac{5}{3} )^{ - 6 x + 9}[/tex]

On comparing both sides-

x - 8 = - 6 x + 9

7 x = 17

x = 17/7

∴ x = 17/7.

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