How do you use #log_10 7=.8451# to evaluate the expression# log_10 (1 3/7)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer A. S. Adikesavan Jun 26, 2016 #0.1549# Explanation: #log_10 10 =1#. So, #log_10(1 3/7)=log_10 (10/7)# #=log_10 10-log_10 7=log_10 10-log_10 7# #=1-0.8451=0.1549#. 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 1489 views around the world You can reuse this answer Creative Commons License