Demvry's Algebra Post

Algebra - writing mathematical phrases using letters to represent numbers

Variable - the unknown
- use a letter to represent a number

Constant - the integer in an algebraic expression or equation

Solving One-Step Equation
1) Isolate the variable
2) Cancel using the opposite
- Create a zero pair for the CONSTANT
3) Balance on the other side of the equal sign
4) Verify your answer

Ex. n + 6 = 14



Solving One-Step Equation Video


Links:
http://www.algebralab.org/lessons/lesson.aspx?file=Algebra_OneVariableOneStep.xml
http://staff.argyll.epsb.ca/jreed/math8/strand2/2202.htm
http://www.algebra-class.com/one-step-equations.html

Solving Two-Step Equation
1) Isolate the variable
2) Cancel the constant
3) Balance
4) Simplify the variable
5) Balance
6) Verify

Ex. 2x + 4 = 10



Solving Two-Step Equation Video


Links:
http://www.math.com/school/subject2/lessons/S2U3L6GL.html
http://www.numberpower.org/BeyondBasics/Algebra/HTML/2StepEquatiBasic.html
http://www.mathguide.com/lessons/Equations.html