One-Step Equations (Multiplication/Division)

One-Step Equations (Multiplication/Division)

Review

Inverse Operations

• The inverse operation means to complete the OPPOSITE operation

• Multiplication = Division

• Division = Mutiplication

Isolating the Variable

• The goal of finding the value of the variable in an equation is to ISOLATE the variable.  

• In order to isolate the variable, we must complete the inverse operation

• When we are using the inverse operation, we must balance the equation (whatever we do to one side of the equal sign, we must do to the other)- Draw a line through the equal sign as a reminder

Checklist

• 1. Read the equation

• 2. Determine the inverse operation needed to ISOLATE the variable

• 3. BALANCE the equation, by completing the inverse operation

• 4. Find the value of the variable

• 5. Check your work by plugging in the value of the variable to the equation

Multiple Choice

4x = 48

• 11

• 12

• 13

• 14

Multiple Choice

9x = 27

• 1

• 2

• 3

• 4

Multiple Choice

 $\frac{c}{11\ }$  = 4

• 20

• 44

• 33

• 66

Multiple Choice

 $\frac{c}{7}$  = 5

• 35

• 42

• 49

• 56

Multiple Choice

3s = 36

• 6

• 9

• 11

• 12

Multiple Choice

 $\frac{c}{3}$  = 7

• 19

• 20

• 21

• 22