mahmoodnasir18 mahmoodnasir18
  • 25-02-2020
  • Mathematics
contestada

log4 (3x – 7) – log4 2 = 3.

Respuesta :

lavanyaande
lavanyaande lavanyaande
  • 25-02-2020

The solution of the following question x = 45

Step-by-step explanation:

[tex]log _{4} (3x -7)}[/tex] - [tex]log_{4} 2[/tex] = 3

or, [tex]log_{4} \frac{3x-7}{2}[/tex] = 3 [ we know that, [tex]log_{10}a - log_{10}b = log_{10\frac{a}{b} }[/tex]]

or, [tex]\frac{3x-7}{2}[/tex] = [tex]4^{3}[/tex]

or,  [tex]\frac{3x-7}{2}[/tex] = 64

or, 3x -7 = 64 X 2

or, 3x = 128 + 7

or, 3x = 135

or, x = 135/3

=45

Here is the answer.

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