Solving and Justifying Solutions to Equations

Which property justifies the work shown?

• Distributive Property

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

• Distributive Property

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

Which property justifies the work shown?

• Distributive Property

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

Lisa correctly solved an equation and got 10=-5 as her answer. What type of solution does this equation have?

• One Soluton

• No Solution

• Infiniite Solutions

• One Solution

• No Solution

• Infinite Solutions

• One Solution

• No Solution

• Infinite Solutions

• One Solution

• No Solution

• Infinite Solutons

Sarah incorrectly solved the equation -6(7n+7)=-294 as shown.

Step 1:      -6(7n + 7) = -294
Step 2:       -42n - 42 = -294
Step 3:               -42n = -336
Step 4:                n = 8
Between which two steps did Sarah make a mistake?

• Step 1 and Step 2

• Step 2 and Step 3

• Step 3 and Step 4

• Step 1 and Step 2

• Step 2 and Step 3

• Step 3 and Step 4

• Step 4 and Step 5

Brook correctly solved an equation and got x = x as her answer. What type of solution does this equation have?

• One Solution

• No Solution

• Infinite Solutions