Suppose that a,b,c, and d are positive integers that satisfy the equations<
\begin{array}{l}a b+c d=38 \\ a c+b d=34 \\ a d+b c=43\end{array}
What is the value of a+b+c+d?
Answer Choices
A. 15
B. 16
C. 17
D. 18
E. 19
Suppose that a,b,c, and d are positive integers that satisfy the equations<
What is the value of a+b+c+d?
Answer Choices
A. 15
B. 16
C. 17
D. 18
E. 19