Question

The sum of two numbers is 9 and their differecne is 3

Answer 1

• The required values are 6 and 3.

Explanation:

Let the numbers be x and y. Now, We have to follow the question's statement. First of all, we have to form equations according to the question's statement.

• x + y = 9
• x - y = 3

Solve the question by elimination method.

• x + y = 9
• x - y = 3

_______________

• 2y = 6
• y = 6/2
• y = 3

Put the value of y in equation 1.

• x + y = 9
• x + 3 = 9
• x = 9 - 3
• x = 6

Therefore, the required values are 6 and 3.

Answer 2

let's use x to represent the unknown number

and let y=3

solution

x+y=9

x+3=9

x=9-3

x=6

therefore 6 is the unknown number

so

6+3=9