If you want to add together logarithms with the same base, the Product Property of Logarithms can help! In this tutorial, you'll learn about this helpful property and see how it can be used to quickly add logarithms with the same base.
If you ever plug a value in for a variable into an expression or equation, you're using the Substitution Property of Equality. This property allows you to substitute quantities for each other into an expression as long as those quantities are equal. Watch this tutorial to learn about this useful property!