Question

60 point Pls someone

Indicate which property is illustrated in Step 1.

Step 1

5x +8+7x + 1=(5x + 8)+(7x+1)

Step 2 = 5x + (8 + 7x) + 1

Step 3 = 5x + (7x + 8) + 1

Step 4 = (5x + 7x) + (8 + 1)

Step 5 = (5 + 7)x + (8 + 1)

Step 6 = 12x + 9

A. associative

B. commutative

C. arithmetic fact

D. distributive

Answer 1

A. associative

associative property which describes the numbers in a multiplication expression can be regrouped using parentheses.

for example: 2x² + 5x + 3 ↔ ( x + 1 ) ( 2x + 3 )