What is the value of the x variable in the solution to the following system of equations?

4x + 2y = 12
x – y = 3

0

−3

3

2

Question

What is the value of the x variable in the solution to the following system of equations?

4x + 2y = 12
  x – y = 3    

 0 

 −3 

 3 

 2

anonymous · Answer

Hint:
Substitution method. 
Isolate y in the first equation:
4x + 2y = 12
2y = -4x + 12
y = -2x + 3
Substitute this in for the value of y in the second equation:
x – y = 3    
x - (2x + 3) = 3
x - 2x - 3 = 3
-x - 3= 3
-x = 6

x = 6 /-1

hartnn · Answer

or multiply second equation by 2 and add both the equations......

anonymous · Answer

^That is a much easier way. (: