How do you solve ln(x+8)−ln7=3? Precalculus Properties of Logarithmic Functions Natural Logs 1 Answer Alan N. Aug 5, 2016 x=7e3−8≅132.6 Explanation: ln(x+8)−ln7=3 Since lna−lnb=ln(ab) ln(x+8)−ln7=ln(x+87) Since lna=b→a=eb Our equation can be written as: x+87=e3 Hence: x+8=7e3 x=7e3−8≅132.6 Answer link Related questions What is the natural log of e? What is the natural log of 2? How do I do natural logs on a TI-83? How do I find the natural log of a fraction? What is the natural log of 1? What is the natural log of infinity? Can I find the natural log of a negative number? How do I find a natural log without a calculator? How do I find the natural log of a given number by using a calculator? How do I do natural logs on a TI-84? See all questions in Natural Logs Impact of this question 4105 views around the world You can reuse this answer Creative Commons License