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Wednesday, November 5, 2008

How to solve algebraic equations

First, here are the three steps of solving equations.

1. Ask yourself what is being done to the variable(addition, subtraction, multiplication, division)?

2. Then you do the inverse operation to both sides of the equation( whatever you do to one side you must do to the other).

3. Finally the variable you got from doing inverse operations should equal the variable.

Ex: 5+x=19
-5 -5
x=14


How to check equations

1. First you rewrite the equation. 5+x=19

2. Then, you plug in the variable. 5+14=19

3. Thirdly, you should do all the operations. 5+14=19
19 = 19
4. Lastly, you should get what the variable equals x=14

Vocabulary

Equation- two numbers that have the same value

Variable-a letter that represents a number

Inverse operations-an operation that is the opposite of
what is being done to the variable. So, if it is addition then you do subtraction, and if it is multiplication then you divide.

Need help?

Go to...

http://www.themathpage.com/alg/algebraic-expressions.htm


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