C)
[tex] \frac{6}{8} + \frac{5}{4} = \frac{8}{4} [/tex]
[tex] \frac{5}{3} + \frac{7}{10} = \frac{71}{30} [/tex]
[tex] \frac{8}{4} \times \frac{71}{30} = \frac{71}{15} [/tex]
D)
[tex] \frac{6}{4} + \frac{2}{5} = \frac{19}{10} [/tex]
[tex] \frac{4}{6} - \frac{4}{6} = 0[/tex]
[tex] \frac{19}{10} \div 0 = \frac{19}{10} \times \frac{1}{0} [/tex]
E)
[tex] \frac{3}{4} \times \frac{10}{3} = \frac{5}{2} [/tex]
[tex] \frac{1}{2} \times \frac{2}{5} = \frac{1}{5} [/tex]
[tex] \frac{5}{2} - \frac{1}{5} = \frac{23}{10} [/tex]
F)
[tex] \frac{6}{7} + \frac{3}{5} = \frac{51}{35} [/tex]
[tex] \frac{4}{3} \div \frac{8}{6} = 1[/tex]
[tex] \frac{51}{35} \times 1 = \frac{51}{35} [/tex]
CORONITA PLZ
