anonymous
  • anonymous
https://gyazo.com/616ad1bc3d0dd8f1db00314bf5e73923
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
welshfella
  • welshfella
manipulate each of the 4 options to see if you can change them to x = 2y + z for example the first one:- x - 2y = z add 2y to both sides x - 2y + 2y = 2y + z x = 2y + z you have obtained the equation in the question so its not the first option
anonymous
  • anonymous
sorry i was in the bathroom
welshfella
  • welshfella
thats ok do you follow the above ?

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welshfella
  • welshfella
we are trying to convert each option to x = 2y + z to see which one is not equivalent to it.
anonymous
  • anonymous
start with A? the elimnation process
welshfella
  • welshfella
yes I've done A for you A is equivalent to x = 2y + z
welshfella
  • welshfella
B is x - z = 2y now add z to each side of the equations.
welshfella
  • welshfella
what do you get?
anonymous
  • anonymous
u left

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