sanjayavinashbharath sanjayavinashbharath
  • 19-06-2021
  • Mathematics
contestada

{2x + y = -1}
{3x- 5y + -21}

Respuesta :

cwrw238 cwrw238
  • 19-06-2021

Answer:

(-2, 3).

Step-by-step explanation:

2x + y = -1

3x- 5y = -21

Multiply the first equation by 5:

10x + 5y = -5     Adding this to the second equation:

13x = -26

x = -2.

Substituting this into equation 1:

2(-2) + y = -1

y = -1 + 4 = 3.

Checking this result in the second equation:

3(-2) - 5(3)

= -5 - 15 = -21

- Checks OK.

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