Question

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

Answer 1

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}  

 

Answer 2

Answer:

x-y=2

x=y+2 ( put in equation second.)

2x-y=8

2(y+2) -y=8

2y+4-y=8

2y-y=8-4

y=4

x=y+2

y=4 (put the value of y in this equation)

x=4+2

x=6

that is answer.