# PS Algebra I. On the properties chart…  Addition, Subtraction, Multiplication, and Division Properties of Equality  these equality properties are the.

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PS Algebra I

On the properties chart…  Addition, Subtraction, Multiplication, and Division Properties of Equality  these equality properties are the basis for solving equations  goal in solving equations: to find the value of a given variable (by getting the variable all alone on one side of the equation)

How do I get the variable alone?  in getting the variable alone, one must eliminate everything surrounding it  this “elimination” is done by performing the opposite operation on the term being eliminated: - if positive term (addition), subtract on both sides - if negative term (subtraction), add on both sides - if multiplication, divide on both sides - if division, multiply on both sides

Let’s try some…

“Like Terms”…

Adding and Subtracting “Like Terms”…  terms that are considered “like” can be combined (just add or subtract together the “coefficients”- KEEP the variable portion the same as is!)

Examples of combining like terms…

Now you try some…

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