ariannadiaz0618
ariannadiaz0618 ariannadiaz0618
  • 09-12-2020
  • Mathematics
contestada

find the solution to the system of equations-2 + 2y = -4 3x + 3y = -18

Respuesta :

ramalmlki
ramalmlki ramalmlki
  • 10-12-2020

Answer:

[tex]\boxed{x = -2~~and~~ y = -4}[/tex]

Step-by-step explanation:

-2x + 2y = -4 (times 3) -6x + 6y = -12

3x + 3y = -18 (times 2) 6x + 6y = -36

.

-6x + 6y = -12

6x + 6y = -36 +

12y = -48

[tex]y = \frac{-48}{12}[/tex]

y = -4

.

Substitute the value of y to the one of equations

-2x + 2(-4) = -4

-2x - 8 = -4

-2x = -4 + 8

-2x = 4

[tex]x = \frac{4}{-2}[/tex]

x = -2

Answer Link
JhSparrow JhSparrow
  • 10-12-2020

Answer:

x = -2 and y = -4

Step-by-step explanation:

use elimination or subatitution method

Answer Link

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