High School

1) State whether the following pairs of fractions are equivalent or not:
- [tex]\frac{2}{5}, \frac{10}{15}[/tex]
- [tex]\frac{3}{7}, \frac{6}{7}[/tex]
- [tex]\frac{9}{7}, 1 \frac{2}{7}[/tex]

2) Reduce the given fractions to their lowest terms:
a) [tex]\frac{50}{75}[/tex]
b) [tex]\frac{65}{105}[/tex]
c) [tex]\frac{18}{81}[/tex]