1.

X-y=2 and 2x-y=8 solve by multiplying ​

Answer»

ANSWER:

 [1]    X = y + 2

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

  [2]    2•(y +2) - y = 8

  [2]    y = 4

// SOLVE equation [2] for the variable  y  

  [2]    y = 4  

// By now we KNOW this much :

   x = y+2

   y = 4

// Use the  y  value to solve for  x  

   x = (4)+2 = 6  

Solution :

{x,y} = {6,4}  

 


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