Question

The sum of two number is 15and there difference is 5 find the number.​

Answer 1

Answer:

1st no is 10

2nd is 5

Step-by-step explanation:

sum=15

difference =5

1st no=x+5

2nd =x

x-x+5=15

2x=15-5

2x=10

x=10/5

x=5

so 2nd number is x+5=10

1st no=10

2nd no= 5

check

x+x+5 = 15

5+10=15

x+5-x=5

10-5=5

Answer 2

Let the two numbers be x and y. Then,

x+y=15 (1)

x−y=5 (2)

Adding equation 1 and 2, we get,

2x=20

x=10

Thus, y=5

Hence, the required numbers are 10 and 5.