Question

Find the value of x :- x + y=3; x-y=-1 *​

Answer 1

⇨ x - y = 1 ... [ i ]

⇨ x + y = 3 ... [ ii ]

⇨ y = x - 1

putting value of y in eq. [ ii ]

⇒ x + x - 1 = 3

⇒ 2x = 3 + 1

⇒ 2x = 4

⇒ x = 4 ÷ 2

⇒x = 2