chasityjohnson90 chasityjohnson90
  • 25-02-2021
  • Mathematics
contestada

8x - y = 42
-4x - 6 = y

Respuesta :

thibi2807 thibi2807
  • 25-02-2021

Answer:

8x-(-4x-6)=42

8x+4x+6=42

12x=42-6

12x=36

x=36/12

x=3

substitute in an equation of your choice

8(3)-y=42

24-y=42

24-42=y

-18=y

Step-by-step explanation:

Answer Link
ripromano
ripromano ripromano
  • 25-02-2021

Answer:

x= 4 y= -10

Step-by-step explanation:

8x - y = 42

-4x - 6 = y

rearrange -4x - 6 =y to -4x -y = 6

8x - y = 42

-4x - y = 6

4x = 48

48/4 = 12

x=4

subsitute x with 4 adn solve for y = -22

y= -10

Answer Link

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