Question

Log5 (маленькая) (7-2х) = 3 Лог5 (маленькая) 2

Answer 1

Log₅ (7-2х) = 3 Log₅  2

 

Log₅(7 - 2х) =  Log₅2 ³

Log₅(7 - 2х) =  Log₅ 8

7-2х =8

-2х = 8-7

-2х=1

х = - ½

х = -0,5