Question

find the two numbers whose sum is 18 and difference is 6​

Answer 1

Answer:

let the first no. be x

and the second no. be y

According to the question

x+y=18 (equation 1)

x-y=6 (equation 2)

let the equation 2

x-y=6

x=6+y

Putting this value into equation 1

x+y=18

6+y+y=18

2y=18-6

2y=12

y=6

x=6+y

x=6+6

x=12

I hope it is useful for you.

Thanks

Answer 2

Answer:

Let the 1 and 2no. Be x and y respectively

ATQ

X+y=18---------(1)

X-y=6------------(2)

Adding equation 1and 2

x+y+x-y=18+6

2x=24

x=12

x+y=18

Substituting the value of x

12+y=18

y=6