One-step equations

Solve for x:

3x = 21

• 7

• 24

• 18

What does "inverse" mean?

• Invite

• Similar

• Opposite

What is the inverse operation of addition?

• Subtraction

• Multiplication

• Division

What is the inverse operation of division?

• Subtraction

• Multiplication

• Addition

Solve: x + 5 = 10

• x = 15

• x = -10

• x = 5

Solve:

 $\frac{x}{2}$  = 6

• x = 12

• x = 3

• x =  $\frac{1}{2}$  

What is the inverse operation of multiplication?

• Division

• Subtraction

• Addition

What is a variable?

• A number that represents a number

• A letter that represents an unknown number

• A decimal

What 3 things must an equation have?

• Operation sign

• Equal sign

• Addition

• Variable

Solve:

24 + x = 30

• 6

• 7

• 8