Question

substitution x+y=-2 -3x+y=6

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

x = -2 ; y = 0 

Step-by-step explanation:

x + y = -2

⇒ y = -2 - x ...(i)

-3x + y = 6

⇒ -3x + (-2 - x) = 6  (substituting the value of y from equation (i) )

⇒ -3x - 2 - x = 6

⇒ -3x - x = 6 + 2

⇒ -4x = 8

∴ x = -2

Substituting the value of x in equation (i), we get

y = -2 - (-2)

⇒ y = -2 + 2

∴ y = 0