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

4x + 2y = 12
x – y = 3

Question

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

anonymous · Answer

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anonymous · Answer

Multiply the second equation by 2 and add them$$
6x = 18\
x=3
$$
Using the second equation, you find y=0

anonymous · Answer

(4x+2y=12)x1   -----1
(x-y=3)x4   ------2

4x+2y=12
-4x+4y=-12
      +6y=0
           y=0
4x+2(0)=12
4x+0=12
4x=12-0/4
x=3

Check x and y in equation 2
x-y=3
3-0=3

anonymous · Answer

Thank you.