Algebra Review

This chapter reviews key skills and concepts of algebra that you need to know for the SAT. Throughout the chapter are sample questions in the style of SAT questions. Each sample SAT question is followed by an explanation of the correct answer. 

To solve an algebraic equation with one variable, find the value of the unknown variable. 

The equal sign separates an equation into two sides. 

Whenever an operation is performed on one side, the same operation must be performed on the other side. 

To solve an equation, first move all of the variables to one side and all of the numbers to the other. Then simplify until only one variable (with a coefficient of 1) remains on one side and one number remains on the other side. 

Congratulations on completing the arithmetic section. Fortunately, you will only need to know a small portion of algebra normally taught in a high school algebra course for the GRE. The following section outlines only the essential concepts and skills you will need for success on the GRE Quantitative section. 

An equation is solved by finding a number that is equal to a certain variable. 

Your first goal is to get all the variables on one side and all the numbers on the other. 

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Many of the problems and examples discussed in the text involve one or more of a limited number of algebraic equations. If you are having difficulty with the mathematics rather than the chemistry, this algebra review may prove useful. Let s consider a variety of common algebraic relationships and their application to chemistry problem solving. 

Please turn to Appendix II, Matrix Algebra Review, for a brushup on matrix algebra, if required. The multiple regression form is... 

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