0=-16+4x+4y;0=28-7y+7x

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for example:
2x+y=8
x+3y=14

Solution for 0=-16+4x+4y;0=28-7y+7x system of equations:


  • /| 0-(4*x)-(4*y)+16 = 0| 7*y-(7*x)-28+0 = 0
  • We try to solve the equation: 0-(4*x)-(4*y)+16 = 0
  • 16-4*x-4*y = 0 / - 16-4*x
  • -4*y = -(16-4*x) / : -4
  • y = (-(16-4*x))/(-4)
  • y = (16-4*x)/4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 7*((16-4*x)/4)-(7*x)-28+0 = 0| y = (16-4*x)/4
  • (7*(16-4*x))/4-7*x-28+0 = 0
  • 28-14*x-28 = 0
  • -14*x = 0
  • -14*x = 0 / : -14
  • x = 0
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (16-4*x)/4:
  • y = (16-4*0)/4
  • y = (0+16)/4
  • y = 16/4
  • y = 4
  • We get a system of equations:
  • /| y = 4| x = 0

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