Frenchfries13
contestada

Someone please..
Solve the system of equation by using the linear combination method. Explain each step in solving using the linear combination method. Show all of your work.

2x + 3y = 1

y= -2x - 9

Respuesta :

Answer:

x = -7, y = 5

Step-by-step explanation:

Sub the value of y into the first equation

2x + 3(-2x - 9) = 1

2x - 6x - 27 = 1

-4x -27 -1 = 0

-4x - 28 = 0

-4x = 28

x = 28 / (-4)

x = -7

Sub the x value into the second equation

y = -2 * (-7) - 9

y = 14 - 9

y = 5

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