Marie's Algebra Post

One-step Equations

In order for you to understand the steps, there are a couple of words you need to know.
a

Variable - the unknown

-use a letter to represent a number

Constant - the integer in an algebraic expression or equation

Addition/Subtraction

1. Isolate the variable
2. Cancel using the opposite operation *create a zero pair for the constant*
3. Balance on the other side of the equal sign
4. Verify your answer

Example:

Multiplication/Division

1. Isolate the variable
2. Cancel using the opposite operation
3. Balance
4. Verify

Example:

Alge-tiles

Addition/Subtraction

Multiplication/Division

Here is a link for one-step equations.

This video helps solve one-step equations.

Two-Step Equations

Steps:

1. Isolate the variable
2. Cancel the constant
3. Balance
4. Simplify variable
5. Balance
6. Verify

Example:

Here is a link for two-step equations.

This video shows how to solve two-step equations.

*Sorry for the boring, black font. My browser won't let me use colours, and it messed up.