Ryan's Algebra Post

Algebra - Writing mathematical phrases using letters to represent numbers.

Eg. a-15= -27

a= -12

Variabale- A letter represents a number in an algebraic equation or expression.

Eg. b-13=0

Constant- The integer in an algebraic equation or experssion

Eg. 21-n=18

Expression- Pattern, many answers

eg. 6x=12

Equations- Only has one answer and an equal sign

Eg. 8x=32

x=4

Solving One Step Equations :

Solving Two Step Equations :

Isolate the variable

Cancel the constant, by using zero pairs

Balance, by doing it to the other side

Verify to check

http://www.purplemath.com/modules/solvelin2.htm