Solving Equations with Justifications

What property is shown?

-5x+10 = 40

-10 -10

-5x = 30

• Division Property of Equality

• Subtraction Property of Equality

• Commutative Property of Equality

• Identity Property of Addition

Tags

CCSS.HSA.REI.A.1

Solve.
 $200+20y=100$  

• -5

• 5

• 15

• -15

Tags

CCSS.7.EE.B.4A

Which property justifies the second step?
          4x + 8 = 0
               - 8    - 8

• Subtraction Property of Equality
• Addition Property of Equality
• Identity Property of Addition
• Commutative Property of Addition

Tags

CCSS.HSA.REI.A.1

Which property justifies the fourth step?
          2 - 7 = 3x + 7 - 7
          2 - 7 = 3x + 0
          2 - 7 = 3x
            -5 = 3x

• Substitution Property of Equality
• Subtraction Property of Equality
• Minus Property of Subtraction
• Inverse Property of Addition

Tags

CCSS.HSA.REI.A.1

Which property says that you can add the same number to both sides of any equation?

• Addition Property of Equality
• Subtraction Property of Equality
• Multiplication Property of Equality
• Commutative Property of Equality

Tags

CCSS.HSA.REI.A.1

Which property says that you can multiply both sides of any equation by the same number?

• Addition Property of Equality
• Subtraction Property of Equality
• Multiplication Property of Equality
• Division Property of Equality

Tags

CCSS.HSA.REI.A.1

Which property would you use to simplify the following expression?

3(y + 5)

• Distributive Property

• Multiplication Property of Zero

• Commutative Property

• Associative Property

Tags

CCSS.6.EE.A.3

What is the first step for solving this equation?

• Add 6

• Subtract 6

• Times by 4

• Times by -5

Tags

CCSS.HSA.REI.A.1

If 2x - 5 = 10, then 2x = 15.

• Subtraction Property of Equality
• Addition Property of Equality
• Division Property of Equality
• Substitution

Tags

CCSS.HSA.REI.A.1

If 3x = 15, then x = 5

• Subtraction Property of Equality
• Addition Property of Equality
• Division Property of Equality
• Multiplication Property of Equality

Tags

CCSS.HSA.REI.A.1