a: 8/7; 9/7; 10/7; 11/7; 12/7
b: 1/7; 2/7; 3/7; 4/7; 5/7
c: 1/1=2/2=3/3=4/4=5/5
\(a,\dfrac{8}{7};\dfrac{9}{7};\dfrac{12}{7};\dfrac{15}{7};\dfrac{10}{7}\\ b,\dfrac{1}{7};\dfrac{2}{7};\dfrac{3}{7};\dfrac{4}{7};\dfrac{5}{7}\\ c,\dfrac{2}{2};\dfrac{3}{3};\dfrac{7}{7};\dfrac{8}{8};\dfrac{10}{10}\)
