matteogambino
matteogambino matteogambino
  • 14-02-2017
  • Mathematics
contestada

Solve the system equation below

3x + y = -7
-2x + 4y = 0

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kum1te
kum1te kum1te
  • 14-02-2017
1. 3x + y = -7
2. -2x + 4y = 0
1. y=-7-3x
2. -2x+4(7-3x)=0
2. -2x+28-12x=0
2. -14x=-28
2. x=2
1. y= -7-3*2
1. y = -13

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