Math, asked by vishnupriya9200, 3 months ago

sum of 2 numbers if 15, their difference is 7. what are the numbers​

Answers

Answered by kavinsiddhu758
0

Answer:

x + y = 15

- x - y = 7

2y = 8

2y/2 = 8/2

y = 4

x + 4 = 15

x + 4 - 4 = 15 - 4

x = 11

check

11 + 4 = 15

15 = 15

11 - 4 = 7

7 = 7

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Answered by kaushik05
5

Let the numbers be x and y

A/Q

• sum = 15

=> x + y = 15 ----- ( i)

• Difference = 7

=> x - y = 7 ------(ii)

Add both equation , we get :

=> 2x = 22

=> x = 22/2 = 11

put x = 11 in equation (i)

=> 11 + y = 15

=> y = 15-11= 4

Hence , the numbers are 11 and 4.

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