How do you solve 5^(2x-1) = 7^(2x)? Precalculus Solving Exponential and Logarithmic Equations Logarithmic Models 1 Answer VinÃcius Ferraz Jul 3, 2018 x = frac{log 5}{2(log 5 - log 7)} Explanation: log 5^{2x - 1} = log 7^{2x} (2x - 1) log 5 = 2x log 7 x (2 log 5 - 2 log 7) = 1 log 5 x = frac{log 5}{log 25 - log 49} (25/49)^x = 5 Answer link Related questions What is a logarithmic model? How do I use a logarithmic model to solve applications? What is the advantage of a logarithmic model? How does the Richter scale measure magnitude? What is the range of the Richter scale? How do you solve 9^(x-4)=81? How do you solve logx+log(x+15)=2? How do you solve the equation 2 log4(x + 7)-log4(16) = 2? How do you solve 2 log x^4 = 16? How do you solve 2+log_3(2x+5)-log_3x=4? See all questions in Logarithmic Models Impact of this question 3744 views around the world You can reuse this answer Creative Commons License