Superllama
Superllama Superllama
  • 07-03-2017
  • Mathematics
contestada

System of substitution
Y-9=-x
3x-y=7

Respuesta :

PsychoChess
PsychoChess PsychoChess
  • 07-03-2017
3(y-9)-y=7
3y - 27 -y = 7
2y = 34
Y = 17

3(x) -17 = 7
3x = 24
X = 8

Answer Link
Аноним Аноним
  • 07-03-2017
1.  X = 9 - Y

2. X = 7+y/3

I really hope this helps. :)
Answer Link

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good job