In february roger spend 30 hours watching netflix in march has been 20% less time watching what is the amount of time he's spent watching

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.

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