Review: Two-Step Equations

Review: Two-Step Equations

Let's review the four types of two-step equations!

Multiple Choice

What is the first step in solving the equation

 $20x+9=149$  ?

• Add 9

• Subtract 9

• Divide by 20

Multiple Choice

In the equation

 $20x\ +\ 9\ =\ 149\$  the first step was to subtract 9 from both sides. This gives you  $20x=140$  . What is the second step?

• Multiply by 20

• Divide by 20

• Multiply by 140

• Divide by 140

Multiple Choice

 $20x+9=149$  

 $20x\ =\ 140$  

 $x\ =\ ?$  

• 7

• 70

• 120

• 2800

Multiple Choice

 $9d-5=49$  

What is the next equation after performing the first step?

•  $9d=44$  

•  $9d=54$  

Multiple Choice

 $9d-5=49$   

 $9d=54$  
 $d=?$  

• 6

• 486

• 45

Multiple Choice

 $\frac{m}{3}+7=12$  

What operation do you do first to solve the equation for m?

• Add 7

• Subtract 7

• Multiply by 3

Multiple Choice

 $\frac{m}{3}+7=12$ 

 What is the next equation?

•  $\frac{m}{3}=12$  

•  $\frac{m}{3}=5$  

•  $\frac{m}{3}=19$  

Multiple Choice

 $\frac{m}{3}+7=12$  

 $\frac{m}{3}=5$  

How operation do you do next to solve the equation?

• divide by 3

• add 7

• multiply by 3

Multiple Choice

 $\frac{m}{3}+7=12$  

 $\frac{m}{3}=5$  

 $m=?$  

• 15

• 2

• 1.67

Multiple Choice

What is the first step in solving the equation

 $\frac{k-10}{3}=9$  ?

• Add 10

• Multiply by 3

• Divide by 3

Multiple Choice

The first step to solve the equation  $\frac{k-10}{3}=9$  is to multiply. What would the next equation be?

•  $k-10=27$  

•  $k-10=3$  

•  $\frac{k}{3}=90$  

Multiple Choice

 $\frac{k-10}{3}=90$  

 $k-10=27$  

 $k=?$  

• 27

• 270

• 37

Multiple Choice

What is the first step to solve the equation $4\left(x-5\right)=32$  ?

• Divide by 4

• Add five

Multiple Choice

When you divide both sides by 4 in the equation $4\left(x-5\right)=32$ , what is the resulting equation? 

•  $x-5=8$  

•  $x-5=128$  

•  $x-5=36$  

Multiple Choice

 $4\left(x-5\right)=32$  
 $x-5=8$  
  $x=?$  

• 3

• 40

• 13