walkercamran3 walkercamran3
  • 23-02-2019
  • Mathematics
contestada

x-y=11
2x+y=19
Equations by elimination

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 23-02-2019

Answer:

x=10, y=-1

(10,-1)

Step-by-step explanation:

x-y=11

2x+y=19

Add these two equations together to eliminate y

x-y=11

2x+y=19

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

3x = 30

Divide each side by 3

3x/3 = 30/3

x = 10

Now we need to find y

2x+y = 19

2(10) +y = 19

20+y =19

Subtract 20 from each side

20-20 +y = 19-20

y= -1

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