Final answer:
To solve the expression using the commutative and/or associative property, we can reorder the numbers and then multiply them. The simplified product is 147.
Step-by-step explanation:
To solve the given expression ((-7)/10)(-2.1)(100) using the commutative and/or associative property, we need to simplify the expression step by step.
First, we can apply the commutative property to reorder the numbers: (-2.1)((-7)/10)(100).
Next, we can multiply the numbers as normal.
Multiplying -2.1 and (-7)/10 gives us (-2.1)(-7)/10 = 14.7/10 = 1.47.
Finally, multiplying 1.47 by 100 gives us 1.47 * 100 = 147.