Friday, June 8, 2012

Basics of Algebra

Basics of Algebra
Algebra is a division of mathematics designed to help solve certain types of problems quicker and easier. Algebra is based on the concept of unknown values called variables, unlike arithmetic which is based entirely on known number values.
the equation  is the important algebraic concept. it is construct  from numbers, or constants and  variable.
A variable is an an unknown number represented by any letter in the alphabet (often x). The value of each variable must remain the same in each problem.

Several symbols are used to relate all of the variables and constants together. These symbols are listed and explained below.

*     Multiply
/     Divide
+     Add or Positive
-     Subtract or Negative
( )     Calculate what is inside of the parentheses first. (also called grouping symbols).

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