Question 186097
logbase7 x - 1/2 logbase7 9 = logbase7 5
logbase7(x) = logbase7(5) + 1/2logbase7(9)
{{{logbase7(x) = logbase7(5) + logbase7(9)^(1/2)}}}
{{{logbase7(x) = logbase7(5*9^(1/2))}}}
{{{x = 5*sqrt(9)}}}
{{{x = 15}}}