Sadiebug77
Sadiebug77 Sadiebug77
  • 14-01-2016
  • Mathematics
contestada

3x + 4y = 2
2x + 4y =8

Respuesta :

PhyCS
PhyCS PhyCS
  • 14-01-2016
We see that both equations have 4y in them. Subtracting the second equation from the first equation, we get (3x -2x) + (4y-4y) = 2 - 8, x = -6


Plugging x = -6 into any equation, we see that our answer is 18 + 4y = 2, 4y = 2 - 18 = -16, y = -4.

Our answer is x = -6, y = -4
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