Question

Sum of two rational numbers is -4. If one of the number is -8/9, find the other ​

Answer 1

ANSWER:

• Other rational number = -28/9

GIVEN:

• Sum of two rational number = -4
• One rational number = -8/9

TO FIND:

• Other rational number

SOLUTION:

=> Sum of two rational number = -4

Let the other rational number be x

$\implies \: x + \dfrac{ - 8}{9} = - 4 \\ \\ \implies \: x \: = - 4 + \dfrac{8}{9} \\ \\ \implies \: x \: = \dfrac{ - 36 + 8}{9} \\ \\ \implies \: x \: = \dfrac{ - 28}{9}$

Other rational number = -28/9

NOTE:

• This type of questions can be solved by first supposing a number be x or any other variable.
• Then find a suitable expression and simplify it .
• We will get the value of the variable.