Which of the following is equal to 20(x+y)-19(y+x) for all values of x and y ?
Answer Choices
A. 39 x+39 y
B. x+y
C. 39 x+y
D. x+39y
E. 19 x-18 y
Which of the following is equal to 20(x+y)-19(y+x) for all values of x and y ?
Answer Choices
A. 39 x+39 y
B. x+y
C. 39 x+y
D. x+39y
E. 19 x-18 y