alyssavigil8 alyssavigil8
  • 20-06-2018
  • Mathematics
contestada

2x + 4y = 16 , 2x - 4y = 0

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kanest
kanest kanest
  • 20-06-2018
We can combine the two equations to eliminate a variable, as the coefficients for y in both equations are opposite numbers.

Combine the equations:

[tex]4x = 16[/tex]

Divide both sides by 4 to get x by itself:

[tex]x = 4[/tex]

Plug this value into one of the equations:

[tex]2(4) + 4y = 16[/tex]
[tex]8 + 4y = 16[/tex]

Subtract 8 from both sides:

[tex]4y = 8[/tex]

Divide both sides to get y by itself:

[tex]y = 2[/tex]

The answer is 'x = 4, y = 2'.
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