Question

The sum of two numbers is 15 and their difference is 7. Find the numbers.​

Answer 1

Answer:

Step-by-step explanation:

x+y=15

x-y=7

so adding we get 2x=22

x=11 so one number is 11 and other number =15-11=4

11 and 4

Answer 2

Answer:

The numbers are 11 and 4.

Step-by-step explanation:

Let, two numbers be *a* and *b*.

So,

     a+b=15

or, a= 15-b - (i)

Again,

    a-b=7

or, a= 7+b - (ii)

Comparing (i) and (ii) we get,

15-b=7+b

or, 2b= 8      or, b=4

Therefore, a+ 4=15

or, a= 15-4 = 11.

So, a=11 and b= 4