a×b=
[tex]1 \frac{1}{4} \times \frac{2}{5} = \frac{5}{4} \times \frac{2}{5} = \frac{1}{2} [/tex]
b=
[tex] \frac{7}{10} \div \frac{7}{8} = \frac{7}{10} \times \frac{8}{7} = \frac{4}{5} [/tex]
a=
[tex] \frac{5}{6} \div 1 \frac{1}{2} = \frac{5}{6} \div \frac{3}{2} = \frac{5}{6} \times \frac{2}{3} = \frac{5}{9} [/tex]
