Ameilie Ameilie
  • 26-05-2020
  • Mathematics
contestada

7x+2y=24, -8x-2y=-30

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 26-05-2020

Answer:

x= 6, y = -9

Step-by-step explanation:

7x+2y=24,

-8x-2y=-30

Add the two equations together to eliminate y

7x+2y=24

-8x-2y=-30

----------------------

-x +0y = -6

Divide each side by -1

x = 6

Now solve for y

7x+2y = 24

7*6 +2y = 24

42 +2y = 24

Subtract 42 from each side

42-42 +2y = 24-42

2y =-18

Divide each side by 2

2y/2 = -18/2

y = -9

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