2x-4y=-14;4y-8x=-4

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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14

Solution for 2x-4y=-14;4y-8x=-4 system of equations: 


  • /| 2*x-(4*y)+14 = 0| 4*y-(8*x)+4 = 0
  • We try to solve the equation: 2*x-(4*y)+14 = 0
  • 2*x-4*y+14 = 0 // - 2*x+14
  • -4*y = -(2*x+14) // : -4
  • y = (-(2*x+14))/(-4)
  • y = (2*x+14)/4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 4*((2*x+14)/4)-(8*x)+4 = 0| y = (2*x+14)/4
  • (4*(2*x+14))/4-8*x+4 = 0
  • 4-6*x+14 = 0
  • 18-6*x = 0
  • 18-6*x = 0 // - 18
  • -6*x = -18 // : -6
  • x = -18/(-6)
  • x = 3
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (2*x+14)/4: 
  • y = (2*3+14)/4
  • y = (6+14)/4
  • y = 20/4
  • y = 5
  • We get a system of equations:
  • /| y = 5| x = 3

 

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