Ответ:
lg (7-2x) =lg (5+3x)
7-2х=5+3х
-2х-3х=5-7
-5х= -2
х=2/5
х=0,4
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Ответ:
lg (7-2x) =lg (5+3x)
7-2х=5+3х
-2х-3х=5-7
-5х= -2
х=2/5
х=0,4