Question

the product of two rational numbers is -28/81 if one of them is -2/3 then find the other

Answer 1

Let the other number be x

Now, according to question

$x \times \frac{ - 2}{3} = \frac{ - 28}{81}$

$x = \frac{ - 28}{81} \times \frac{3}{ - 2}$

$x = \frac{14}{27}$

then, the other number is 14/27