Question

resolvendo a equação log 7 (9× -1) = log 7 (4 - 2 x) o valor de x é igual a:

Answer 1

$\log_7{(9x-1)}=\log_7{(4-2x)}\ \therefore\\\\ 9x-1=4-2x\ \therefore\ 11x=5\ \therefore\\\\ \boxed{x=\dfrac{5}{11}}$