Question

the product of two rational number is minus 28 by 81 if one of them is minus 2 by 3 then find the other

Answer 1

-2/3*x=-28/81
x=28/81*3/2
x=14/27
hope it helps you.

Answer 2

Product of two numbers = $-\dfrac{28}{81}$

One number is $- \dfrac{2}{3}$

$- \dfrac{2}{3}$ × other number = $-\dfrac{28}{81}$

$\dfrac{-2}{3} \times \dfrac{3}{2} \times other \:\:number = -\dfrac{28}{81} \times \dfrac{3}{2}$

- Other number = - $\dfrac{14}{27}$

Other number = 14 / 27

Therefore, other number is 14 / 27