Carloscruz Carloscruz

28-10-2015
Mathematics

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{3x-y=10
{2x+y=5
Answer y=
×=

Respuesta :

Panoyin Panoyin

28-10-2015

3x - y = 10
2x + y = 5
      5x = 15
   5 5
      x = 3
3x - y = 10
3(3) - y = 10
    9 - y = 10
- 9 - 9
      -y = 1
      -1   -1
   y = -1
   (x, y) = (-1, 3)

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