Do Now 3/1-3/2

What is the difference between an expression and equation?

• Expressions have an equal sign and equations do not have an equal sign
• Expressions do not have an equal sign and equations do have an equal sign
• There is not a difference
• Expressions do not have variables and equations have variables

In an equation or inequality, you want to get the variable...

• on one side
• to disappear
• by itself

Using the "opposite operation" to "undo" and isolate the variable when solving an equation is more commonly called...

• Inverse operations
• math
• variable
• PEMDAS

Find the value of the variable: k - 2.14 = 85

• 82.86

• 2.99

• 87.14

Solve the equation:
4p = 16

• p = 12
• p = -12
• p = -4
• p = 4

Find the value of a:  $12\ =\ \frac{a}{4}$  

• 48

• 3

• 8