How do you solve log_4 5 - log_4 (-4x)=1? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Rajinder S. Oct 20, 2016 x = - 5/16 Explanation: log_4 5 - log_4 (-4x) = 1 log_4 5 - log_4 (-4x) = log_4 4 log_4 (5/(-4x)) = log_4 4 (5/(-4x)) = 4 x = -5/16 Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is log_10 10? How do I work in log_10 in Excel? See all questions in Common Logs Impact of this question 1861 views around the world You can reuse this answer Creative Commons License