Решите))) Help me!)))
Log 1/ 7 (2x+5) - log 1/7 (6) = log 1/7 (2) одз х>-5/2 log 1/7 (2x+5)/6 = log 1/7 (2) (2x+5)/6 = 2 2x+5 = 12 2x=7 x=3.5