Question

Which pair of expressions are equivalent?

 

Comments

2. What is the result when you combine only the constants in the following expression?

---

3. Liliana wants to write an equivalent expression for . Which of her attempts uses the algebraic properties correctly?

     

 

 

 

---

4. Which shows the use of the associative property?  

---

5. Fiona is trying to prove that a pair of expressions are equivalent by using substitution. Which pair of expressions has the same value if she substitutes ?

---

i THINK THE ANSWERS ARE  1-4 2-1 3-2 4-3 and 5-4

Answer 1

1. 3 (10n-2n=8n not 5n)
2. Constants add up to 13
3. 1 (associative is also known as grouping property, commutative is changing the order)
4. 2 (3 shows the distributive property)
5. 4

Comments

Thank you for giving me your answers. It helps me to see how you are thinking.