Step by Step
What is the first thing we want to look for when solving?
The variable.
What is a variable?
A letter or symbol.
How do you undo something?
You do the opposite!
True or False?
When solving, perform addition/subtraction FIRST and multiplication/division SECOND.
True
What 4 operations do you look for when solving?
Addition
Subtraction
Multiplication
Division
What is the variable here?
8X + 12 = 35
The variable is X.
What is the opposite of addition?
Subtraction
By doing the opposite.
What does it mean to "undo" operations when solving?
It means to do the opposite.
What is the variable here?
10 + 7/y = 21
The variable is y.
What is the opposite of subtraction?
Addition
What are the two goals of two-step equations?
1. Undo operations
2. Solve for the variable
What is the 4th step in a two-step equation?
Solve
What is the variable here?
3(m + 11) = 67
The variable is m.
What is the opposite of multiplication?
Division
What are we solving for in two-step equations?
The variable, an unknown number.
How do you know that your answer is correct?
What holds the place of an unknown number?
A variable.
What is the opposite of division?
Multiplication
What is RULE #1?
What you do to one side, you must do to the other side.