$\"\"$

The statement is “ $\"\"$ ”

Commutative property of multiplication:

The order in which numbers are multiplied does not change the product.

For any numbers a and b, $\"\"$

$\"\"$ (Apply commutative property multiplication: $\"\"$ ) $\"\"$

Associative property of multiplication:

The way in which numbers are grouped when multiplied does not change the product.

For any numbers a, b and c; $\"\"$ .

According to associative property, the statement can be written as

$\"\"$

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

The simplified expression is 50r.