Algebra

Algebra

What is Algebra?

Algebra is a branch of mathematics dealing with symbols and the rules for manipulating those symbols. In elementary algebra, those symbols (today written as Latin and Greek letters) represent quantities without fixed values, known as variables.

variables

letters in english alphabet

constant

has a fixed value

coefficient

number written before the variable

Algebraic Expressions

an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division).

Examples:

a

7b

3x

m + n

x - 2