Question

if x=a and y=b is a solution for pair of linear equation onx-y=2 and x+y =2 then find a+b​

Answer 1

Step-by-step explanation:

x+y=2

x-y =2

x+x=2

2x=4

x=2=a

x+y=2

2+y=2

y=0=b

.

a+b=2+0

a+b =2

Answer 2

The value of a+b​ is "2".

Step-by-step explanation:

Given,

The  pair of two linear equations are

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

and x + y = 2                ....... (2)

Adding equations (1) and (2), we get

2x = 4 ⇒ x = 2

Putting x = 2 in equation (1), we get

∴ 2 - y = 2  ⇒ y = 2 -  2 = 2

Given by questions,

x = a  and y = b

⇒  a = 2 and b = 0

∴ a + b = 2 + 0 = 2

Hence, a + b  = 2.