Question

2/5 *-3/7-1/14-3/7 * 3/10+1/7*-1/14
Solve using appropriate properties of rational numbers:

Answer 1

Answer:

$( \frac{2}{5} \times \frac{ - 3}{7} ) - \frac{1}{14} - (\frac{3}{7} \times \frac{3}{10}) + ( \frac{1}{7} \times \frac{ - 1}{14} ) \\ = \frac{ - 6}{35} - \frac{1}{14} - \frac{9}{70} + \frac{ - 1}{98} \\ = \frac{ - 84 - 35 - 63 + ( - 5)}{490} \\ = \frac{ - 84 - 35 - 63 - 5}{490} \\ \boxed{ = \underline{ \underline{ \frac{187}{490} }}}$