\(\left(\frac{15}{8}-\frac{9}{13}\right)+\left(\frac{22}{13}-\frac{5}{8}\right)\)
\(=\left(\frac{15}{8}-\frac{5}{8}\right)+\left(\frac{22}{13}-\frac{9}{13}\right)\)
\(=\frac{10}{8}+\frac{13}{8}\)
\(=\frac{23}{8}\)
(15/8-9/13)+(22/13-5/8)= (15/8-5/8)-(9/13-22/13)=10/8-(-1)=9/4)