Question

28/-84 expressed as a rational number with numerator 7 is?

Answer 1

Answer:

$\frac{28}{ - 84 } = \frac{ - 28}{84 } \\ \\ \frac{ - 28}{84} \div \frac{2}{2 } \\ = \frac{ - 14}{42} \\ \\ = \frac{ - 14}{42} \div \frac{2}{2} \\ \\ = \frac{ - 7}{21}$