Match each equation on the left to the mathematical property it uses on the right.

[tex]\[
\begin{array}{l}
(7+3)+2 = 2+(7+3) \\
3(2x+4) = 6x+12 \\
(9 \cdot x) \cdot 3 = 9 \cdot (x \cdot 3) \\
(8 \cdot x) \cdot 2 = 8 \cdot (2 \cdot x) \\
(4+5)+1 = 4+(5+1)
\end{array}
\][/tex]

A. Commutative property of addition

B. Commutative property of multiplication

C. Associative property of addition

D. Associative property of multiplication

E. Distributive property



Answer :

Sure! Let's match each equation on the left with the appropriate mathematical property on the right. We'll discuss each equation step-by-step to identify the property it uses.

1. Equation: [tex]\((7 + 3) + 2 = 2 + (7 + 3)\)[/tex]

- This equation is illustrating the commutative property of addition. The commutative property states that the order of addition does not change the sum. Therefore, [tex]\((a + b) + c = c + (a + b)\)[/tex].

2. Equation: [tex]\(3(2x + 4) = 6x + 12\)[/tex]

- This equation is illustrating the distributive property. The distributive property states that multiplying a number by a sum is the same as multiplying each addend by the number and then adding the products: [tex]\(a(b + c) = ab + ac\)[/tex].

3. Equation: [tex]\((9 \cdot x) \cdot 3 = 9 \cdot (x \cdot 3)\)[/tex]

- This equation is illustrating the associative property of multiplication. The associative property states that the way in which factors are grouped does not change the product. So, [tex]\((a \cdot b) \cdot c = a \cdot (b \cdot c)\)[/tex].

4. Equation: [tex]\((8 \cdot x \cdot 2) = (8 \cdot 2 \cdot x)\)[/tex]

- This equation is illustrating the commutative property of multiplication. The commutative property states that the order of factors does not change the product. Hence, [tex]\(a \cdot b = b \cdot a\)[/tex].

5. Equation: [tex]\((4 + 5) + 1 = 4 + (5 + 1)\)[/tex]

- This equation is illustrating the associative property of addition. The associative property states that the way in which addends are grouped does not change the sum. Therefore, [tex]\((a + b) + c = a + (b + c)\)[/tex].

Here's the complete matching:

- [tex]\((7 + 3) + 2 = 2 + (7 + 3)\)[/tex] → commutative property of addition
- [tex]\(3(2x + 4) = 6x + 12\)[/tex] → distributive property
- [tex]\((9 \cdot x) \cdot 3 = 9 \cdot (x \cdot 3)\)[/tex] → associative property of multiplication
- [tex]\((8 \cdot x \cdot 2) = (8 \cdot 2 \cdot x)\)[/tex] → commutative property of multiplication
- [tex]\((4 + 5) + 1 = 4 + (5 + 1)\)[/tex] → associative property of addition