Use the given transformation to evaluate the given integral, where R is the triangular region with vertices (0, 0), (8, 1), and (1, 8). (x − 3y) dA R , x = 8u + v, y = u + 8v

1.) 18+5 is one way i’m pretty sure there are others but i can’t think of them right now

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.