Question

the product of two rational number is -4/9 If one of them is -2/5 find the other

Answer 1

let x be the no.
ATQ-
x X(-2/5) = -4/9
-2/5x = -4/9
x = -4/9X (5/-2)
x = -20/-18
x = 10/9

Answer 2

Let the number be x
x × -2/5 = -4/9
x = -4/9 ÷ -2/5
x = -4/9 × -5/2
Now, -4 by 2 , and
the required answer = 10/9.