dtnangelina
dtnangelina dtnangelina
  • 15-04-2020
  • Mathematics
contestada

x - y = 4
2x + y = 5
Elimination method

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dorinanagy2003
dorinanagy2003 dorinanagy2003
  • 15-04-2020
X= y+ 4
2x= 2(y+ 4)+y = 5
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