Diorella's Algebra Post

Variable: The unknown, using a letter to represent the number.

eg. 15 + b = 23

Constant: The integer in an algebraic expression or equation.

eg. n + 16 = 9

You have to make a zero pair for the constant to cancel it out

Algebra: Writing mathematical phrases using letters to represent numbers

eg. n - 8 = -10

Solving Addition/Subtraction One Step Equations:
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

Solving Addition/Subtraction One Step Equations Using Algebraic Tiles:
1. Isolate the variable
2. Cancel the constant using a zero pair
3. Balance
4. Verify

Addition:

Subtraction:

Solving Two Step Equations:
1. Isolate the variable
2. Cancel the constant
3. Balance
4. Simplify the variable
5. Balance
6. Verify

Examples:

Here is a video that might help: