Question

Find two numbers whose sum is 15 and the difference is 1​

Answer 1

Let the number be x and y.

Then,

x+y = 15.....(1)

x-y = 1.....(2)

Adding both equations, we get,

2x = 16

x =8

Now,

x-y = 1

8-y =1

y = 8-1

y =7

Therefore, the numbers are 8 and 7.

Answer 2

Let the numbers be x and y

x+y=15 -------(I)

and

x-y =1 --------(ii)

from both equations

2x =16

x=8

putting the value of x in (i)

8+y=15

y=7

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