**Algebra**- Writing mathematical phrases using letters to represent numbers.

Eg. x+4=9

**Variable**- A letter that represents a number in an equation or expression.

Eg.

**n**+3=5 - "**n**" is the variable.**Constant**- The constant is the integer in algebra

Eg. n

**+5**- "**+5**" is the constant.**Expression**- A pattern, many possible answers.

Eg.

**2x****Equation**- Only one possible answer and has an equal sign

Eg.

**2x-6**

__One Step Equations__

**1.**Isolate the Variable

**2.**Cancel the Constant using a Zero Pair

**3.**Balance - What you do to one side, do to the other.

**4.**Verify to check

__Two Step Equations__

**1.**Isolate the Variable

**2.**Cancel the Constant

**3.**Balance

**4.**Simplify the Variable

**5.**Balance

**6.**Verify

These links can help you and get you to understand better.

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