A=
[tex] \frac{32}{20} - \frac{15}{20} = \frac{17}{20} [/tex]
B
[tex] \frac{ - 15}{6} + \frac{2}{6} = \frac{ - 13}{6} [/tex]
C
[tex] \frac{4}{5} \div \frac{5}{6} = \frac{4}{5} \times \frac{6}{5} = \frac{24}{25} [/tex]
E
[tex] \frac{20}{45} + \frac{6}{45} = \frac{26}{45} [/tex]
f
[tex] \frac{4}{3} \times \frac{1}{2} = \frac{2}{3} [/tex]
