㏒₁/₂(7-2х) +㏒₁/₂ 1/8 = ㏒₁/₂ 15 ОДЗ 7-2х >0 ; x< 3,5
㏒₁/₂(7-2х) = ㏒₁/₂ 15 - ㏒₁/₂ 1/8
㏒₁/₂(7-2х) = ㏒₁/₂ 15 : 1/8
㏒₁/₂(7-2х) = ㏒₁/₂ 120
7 - 2х = 120
-2х = 113
х= - 56,5
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㏒₁/₂(7-2х) +㏒₁/₂ 1/8 = ㏒₁/₂ 15 ОДЗ 7-2х >0 ; x< 3,5
㏒₁/₂(7-2х) = ㏒₁/₂ 15 - ㏒₁/₂ 1/8
㏒₁/₂(7-2х) = ㏒₁/₂ 15 : 1/8
㏒₁/₂(7-2х) = ㏒₁/₂ 120
7 - 2х = 120
-2х = 113
х= - 56,5