Question

the sum of two numbers is -8 if one of them is -5/2 find the other , with explanation​

Answer 1

Answer:

y = -11/2

Step-by-step explanation:

x+y = -8

-5/2+y = -8

y = -8+5/2

= (-16+5)/2

= -11/2

Answer 2

Answer :-

• The other number is -11/2.

To find :-

• The other number.

Step-by-step explanation :-

• It is given that the sum of two numbers is -8 and one of them is -5/2. We have to find the other number.

Let :-

• The other number be "x".

Now,

• The sum of x and -5/2 is -8.

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Therefore,

$\longmapsto\sf x + \dfrac{ - 5}{ \: \: \: 2} = - 8$

$\sf \longmapsto x = - 8 - \dfrac{ - 5}{ \: \: \: 2}$

$\sf\longmapsto x = \dfrac{ - 8}{ \: \: \: 1} - \dfrac{ - 5}{ \: \: \: 2}$

$\sf\longmapsto x = \dfrac{ (- 8) \times 2 - ( - 5) \times 1}{2}$

$\sf \longmapsto x = \dfrac{( - 16) - ( - 5)}{2}$

$\longmapsto \underline{ \boxed{ \sf x = \dfrac{ - 11}{ \: \: \: \: 2}}}$

• Hence, the other number is -11/2.

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Know more :-

What is a rational number?

• A number that can be expressed in the form of p/q, where p, q are integers and q ≠ 0, is called a rational number.