Question

2. If x + y = 3 and x - y = -1, then the value of x is ​

Answer 1

Step-by-step explanation:

x + y = 3

x = 3 - y ---------------(1)

x - y = - 1

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

In both equations LHS is equal so RHS can be equated

- 1+y = 3 - y

2y = 4

y = 2

u can substitute value of y in any equations to get x value,

x = 3 - y

= 3 - 2 = 1

so x is 1