## Sunday, May 8, 2011

### Kevin's Algerbra Post

Algebra - Writing mathematical phrases using letters to represent unknown numbers
Ex. 5 + x = 7 or 7 - x = 5

Variable - A letter used to represent an unknown number in an equation or expression
Ex. 5 + x = 10 x <---- is the variable

Constant - The integer in an algebraic equation or expression
Ex. 5+ x = 10 In this case 5 is the integer

Expression - A pattern that may have many answers
Ex. 5x

Equation - An equation only has 1 answer and contains an equal sign
Ex. 1 + x = 2

How to Solve a 1 Step Equation
1) Isolate the variable
2) Cancel the constant using a zero pair

3) Balance - What you do to one side of the equation do to the other

4) Verify to check - Rewrite the equation but include the answer you received if they match up your correct

How to Solve 2 Step Equation

1) Isolate the variable
2) Cancel the constant using zero pairs

3) Balance the equation out
4) Simplify the variable

5) Balance the equation again

6) Verify to check

#### 1 comment:

1. Good job, Kevin! Next time add a video or link and outline your work on the piece of paper to make it stand out.