Question

The product of two rational numbers is
-15/20.
If one of them is - 18/7. Find the
other. ​

Answer 1

Answer:

hope it's useful.. plz follow me...

Answer 2

$\sf Let\: the \:rational\: number = a$

Given :-

• Product = $\sf\dfrac{-15}{20}$

• Rational Numbers = a , $\sf\dfrac{-18}{7}$

Solution :-

In question it is given that product of two rational number is $\sf\dfrac{-15}{20}$

$\sf{ }$

$\implies\sf{(a)\times(\dfrac{-18}{7})=\dfrac{-15}{20}}$

$\sf{ }$

$\implies\sf{a=\dfrac{\dfrac{-15}{20}}{\dfrac{-18}{7}}}$

$\sf{ }$

$\implies\sf{a=\dfrac{7}{24}}$

$\sf{ }$

So , another Rational Number is $\sf\dfrac{7}{24}$

Extra - Information :

• Product of two negative terms is always positive

(-)(-) = (+)

• Product of one negative and one positive term will always be negative

(+)(-) = (-) (-)(+) = (-)

• Product is defined as multiplication of any two number . In terms of Rational number product of numenator with numenator , and denominator with denominator.