How do you solve log_b30-log_b5^2=log_bx? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer ali ergin Jul 25, 2016 x=6/5 Explanation: log_b 30-log_b 5^2=log_b x ? "so ;" log _a( b/c)=log_a b-log_a c log _b (30/25)=log _b x 30/25=x x=6/5 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 3265 views around the world You can reuse this answer Creative Commons License