Algebra-1

To find the missing number to complete the associative property, let's solve the equation:

5 × (__ × 9) = (5 × 8) × 9

According to the associative property of multiplication, the grouping of the numbers does not affect the result. Therefore, we can remove the parentheses without changing the value:

5 × __ × 9 = 5 × 8 × 9

Now, we can simplify e...