Step 1 :\(\operatorname{lcm}(3, 8) = 24\)
Step 2 :\(\frac{2}{3}\times\frac{8}{8}-\frac{1}{8}\times\frac{3}{3}=\frac{16}{24}-\frac{3}{24}\)
Step 3 :\(\frac{16}{24}-\frac{3}{24}=\frac{13}{24}\)