hailey2 hailey2
  • 12-02-2015
  • Mathematics
contestada

Y=7x-24
Y=-3x+16 jakaj

Respuesta :

Panoyin
Panoyin Panoyin
  • 20-02-2015
y =  7x - 24
y = -3x+ 16
2y = 4x - 8
2y = 4x - 8
 2        2 
y = 2x - 4
 2x - 4 = 7x - 24
-2x        -2x       
       -4 = 5x - 24
    +24         +24
      20 = 5x
      20 = 5x
       5      5
        4 = x
y = 2x - 4
y = 2(4) - 4
y = 8 - 4
y = 4
(x, y) = (4, 4)
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