Question

x=-y+1 And 2y=x-4 by elimination method​

Answer 1

Answer:

x = 2, y = -1

Step-by-step explanation:

given equations:

(i) x = -y + 1

⇒ x + y = 1

(ii) 2y = x - 4

⇒ x - 2y = 4

x + y = 1 ........... multiply with 2

x - 2y = 4 ........... multiply with 1

⇒       2x + 2y = 2

          x - 2y = 4

(add)   3x = 6

              ∴ x = 2

x + y = 1

2 + y = 1

y = -1

∴ x = 2, y = -1

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