In a class of 7th graders, 40% thought that BBQ was the best flavor of Pringles. If 12 students thought BBQ was the best flavor, how many 7th graders were in the class?

4y - 6 + y^2 - 9 = y^2 + 4y - 15y^2 term terms- termstotal of 3 terms when simplified

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.