This is a free lesson from our course in Algebra I

 This lesson explains the concept of the distributive property. It also explains how to solve an equation by simplifying both sides of the equation by clearing out any parentheses, and then combining like terms. When you distribute something, you give pieces of it to many different people. One example of distributing objects is handing out papers in class. In math, people usually talk about the distributive property of one operation over another. The most common distributive property is the distribution of multiplication over addition. It says that when a number is multiplied by the sum of two other numbers, the first number can be handed out or distributed to both of those two numbers and multiplied by each of them separately. Here's the distributive property in symbols: a * (b + c) = a * b + a * c. For example, if one side of an equation has an expression such as a(b + c), then you should simplify it by removing its parenthesis and changing it to ab + ac.
Other useful lessons:
 Adding-subtracting same number on both side of an equation Multiplying-dividing same number on both side of an equation Solving inequalities
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