anonymous
  • anonymous
HELP ME PLEASE!!!!! can u solve simultaneously: 7/x - 5/y = 3 2/x + 25/2y = 12 please include working out please. thank you
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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DanJS
  • DanJS
you can multiply the first one by -2, and the second one by 7, then add them together
DanJS
  • DanJS
-14/x + 10/y = -6 14 /x + 175/2y = 84 -----------------------
anonymous
  • anonymous
ohhh

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DanJS
  • DanJS
when you add the two equations, the x variable will go away so you can solve for y
anonymous
  • anonymous
i get it now thank you
DanJS
  • DanJS
welcome
DanJS
  • DanJS
fory linear systems you can - multiply equations by constants - add equations - change order of equations

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