Question

X-y=-10 2x+4y=22 Solving Systems by Substitution

Answer 1

Answer:

 [1]    x - y = -10

  [2]    2x + 4y = 22

Step-by-step explanation:

// Solve equation [1] for the variable  x  

 

 [1]    x = y - 10

// Plug this in for variable  x  in equation [2]

  [2]    2•(y -10) + 4y = 22

  [2]    6y = 42

// Solve equation [2] for the variable  y  

  [2]    6y = 42  

  [2]    y = 7  

// By now we know this much :

   x = y-10

   y = 7

// Use the  y  value to solve for  x  

   x = (7)-10 = -3

I am sorry if I got it wrong but I hope this helped.

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