noahgommel noahgommel

15-06-2015
Mathematics

contestada

Solve each linear equation by subsitution or elimination
4x-y=-1
2x+y=7

Respuesta :

Panoyin Panoyin

17-06-2015

4x - y = -1
2x + y = 7
   6x = 6
      6    6
       x = 1
4x - y = -1
4(1) - y = -1
    4 - y = -1
- 4 - 4
      -y = -5
      -1 -1
   y = 5
   (x, y) = (1, 5)

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