JessiccaFact: Algebra
October 9th 2006 10:00
Algebra is a branch of mathematics that uses basic addition, subtraction, multiplication, and division to solve problems called equations. In equations, letters represent unknown numbers. However, a letter can stand for one number in one equation and for a different number in another formula.
Algebra employs symbols, which have special meanings and are governed by five basic "laws". The basic components of algebra are the "variable", a letter whose value can change without affecting the balance of the equation; and the "constant", a number whose value never changes.
The letter "x" is most commonly used to express an unknown number, example:
x - x = 0
That means that any number subtracted from it leaves a remainder of 0. Scientists and business people use algebra to solve problems that arithmetic alone cannot.
Algebra employs symbols, which have special meanings and are governed by five basic "laws". The basic components of algebra are the "variable", a letter whose value can change without affecting the balance of the equation; and the "constant", a number whose value never changes.
The letter "x" is most commonly used to express an unknown number, example:
That means that any number subtracted from it leaves a remainder of 0. Scientists and business people use algebra to solve problems that arithmetic alone cannot.
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