Caden12 Caden12
  • 10-05-2016
  • Mathematics
contestada

3x-2y=12 and 2x+4y=16

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 10-05-2016
eliminate
multiply first equation by 2
6x-4y=24
add to other equaiton

6x-4y=24
2x+4y=16 +
8x+0y=40

8x=40
divide 8
x=5
sub
2x+4y=16
2(5)+4y=16
10+4y=16
4y=6
divide 4
y=6/4=3/2

(5,3/2)
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25-36/9*4+24/2*3-(5*(-6))