mubarakibrahim566
mubarakibrahim566 mubarakibrahim566
  • 02-10-2019
  • Mathematics
contestada

Solve: 2x+4y=20 and 2x-y=4

Respuesta :

nadiroz
nadiroz nadiroz
  • 02-10-2019
Answer:
(x, y) = (18/5, 16/5)
OR
(x, y) = (3.6, 3.2)
Answer Link
kevinw0928
kevinw0928 kevinw0928
  • 02-10-2019

Answer:

X=3.6

Y=3.2

Step-by-step explanation:

  1. 2x-y=4 which means 2x=4+y
  2. 2x+4y = 20 which means 4+y+4y=20 ==> 4+5y=20
  3. 5y = 20-4 = 16
  4. y= 16/5 = 3.2
  5. 2x=4+y=4+3.2=7.2
  6. x = 7.2/2 = 3.6

Answer Link

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