Solving One-Step Equations with Addition and Subtraction

What is an equation in algebra?

• A statement that a number is always negative

• A statement that two expressions are equal

• A statement that two numbers are different

• A statement that a variable is always positive

What does it mean for a value to be a solution to an equation?

• It makes the equation false

• It makes the equation more complex

• It makes the equation true

• It makes the variable disappear

In the equation 7 + 3 = 8, is 7 a solution for x?

• Yes, because 7 + 3 equals 8

• No, because 7 + 3 does not equal 8

• Yes, because 7 is a positive number

• No, because 7 is a negative number

What must be done to both sides of the equation to keep a balance scale analogy true?

• Add the same number to both sides

• Subtract different numbers from both sides

• Multiply both sides by different numbers

• Divide both sides by different numbers

If you have the equation x + 3 = 8, what should you do to isolate x?

• Multiply both sides by 3

• Subtract 3 from both sides

• Add 3 to both sides

• Divide both sides by 3

In the equation n + 8 = 19, what is the value of n?

• 8

• 19

• 27

• 11

How do you solve the equation c + 42 = 97?

• Divide both sides by 42

• Multiply both sides by 42

• Subtract 42 from both sides

• Add 42 to both sides

What is the solution to the equation n - 4 = 2?

• 8

• 4

• 2

• 6

If m - 7 = 28, what is the value of m?

• 7

• 28

• 35

• 21

Samantha has 22 tickets, which is 8 more than Mia. How many tickets does Mia have?

• 30

• 8

• 14

• 22