Question

sum of two numbers is 7 and their difference is 5. find the number​

Answer 1

Step-by-step explanation:

let the number x and y

x+y=7____( 1 )

x-y=5_____( 2 )

add the equation ( 1 ) and (2)

x+y=7___(1)

x-y=5___(2)

____________

2x=12

x=12/2

x=6

x = 6 put in equation ( 1 )

x+y=7

= 6+y=7

= y=7-6

= y = 1

Answer 2

Given:

Sum of two numbers = 7

Difference of two numbers = 5

To find:

The numbers

Solution:

Let the first number be = x

Let the second number be = y

According to the question -

x + y = 7 ( eq 1)

x - y = 5 ( eq 2)

From equation 1

x = 7 - y

Substituting the value of x in equation 2

Therefore,

x - y = 5

7 - y - y = 5

-2y = 5 - 7

2y = 2

y = 1

Now, substituting value of y

x = 7 - y

x = 7- 1

x = 6

Answer: The values are x = 6 and y = 1