Answer:The other rational number= -18/7
Explanation:
The product of the two rational numbers is -42/63.
One of the rational number=7/27
The other rational number whch can be called R can be gotten by diving the product by the rational numvber goven
R x 7/27 =-42/63.
-42/63 ÷ 7/27=R
R=-42/63 X 27/7
R= -18/7