y=3x-7;y=-2x+8

Simple and best practice solution for y=3x-7;y=-2x+8. Check how easy it is, to solve this system of equations and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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

Solution for y=3x-7;y=-2x+8 system of equations: 


  • /| y-(3*x)+7 = 0| y-(-2*x)-8 = 0
  • We try to solve the equation: y-(3*x)+7 = 0
  • y-3*x+7 = 0 // - 7-3*x
  • y = -(7-3*x)
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| -(-2*x)-(-3*x)-8-7 = 0| y = -(7-3*x)
  • 5*x-15 = 0 // + 15
  • 5*x = 15 // : 5
  • x = 15/5
  • x = 3
  • We insert the solution into one of the initial equations of our system of equations
  • For y = -(7-3*x): 
  • y = -(7-3*3)
  • y = -(7-9)
  • y = 2
  • We get a system of equations:
  • /| y = 2| x = 3

 

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