Question

3. The product of two rational number is 15 . if
one of the number is -5/2 find the other ​

Answer 1

Given :

•The product of two rational number =15

•If one of the number =-5/2

To Find :

•The other number =?

Solution :

•Let the other number be 'x'.

According to given conditions :

$\\ \implies \sf \: x \times \frac{ - 5}{2} = 15 \\ \\ \implies \sf \: - 5x = 15 \times 2 \\ \\ \implies \sf \: - 5x = 30 \\ \\ \implies \sf \: x = \frac{ - 30}{5} \\ \\ \implies \sf \: x = - 6 \\ \\ \implies \boxed{ \bf{x = - 6}}$

The other number is -6 .

Answer 2

Step-by-step explanation:

Given :

•The product of two rational number =15

•If one of the number =-5/2

To Find :

•The other number =?

Solution :

•Let the other number be 'x'.

According to given conditions :

$\\ \implies \sf \: x \times \frac{ - 5}{2} = 15 \\ \\ \implies \sf \: - 5x = 15 \times 2 \\ \\ \implies \sf \: - 5x = 30 \\ \\ \implies \sf \: x = \frac{ - 30}{5} \\ \\ \implies \sf \: x = - 6 \\ \\ \implies \boxed{ \bf{x = - 6}}$

The other number is -6 .