Question

Log1/3(4x+1)=-2 выручайте

Answer 1

$log_{ \frac{1}{3} }(4x+1)=-2 \\ -log_3(4x+1)=-2 \\ log_3(4x+1)=2 \\ 4x+1=3^2 \\ 4x+1=9 \\ 4x=9-1 \\ 4x=8 \\ x=2$