Answer:
given ; the product of two rational numbers = -28/81
one number is =14/27
let, another number be p/q
now, according to the question,
p/q×14/27= -28/81
or, p/q=(-28/81) /(14/27)
or, p/q =( -28/81) ×(27/14)
therefore, another number is -2/3.
hope its helpful...
