Question

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

4x + 2y = 12
x – y = 3

Answer 1

x=3

Answer 2

From second equation , let x=3+y
Now subsstitute for x in first equation
4(3+y) + 2y =12
12 +4y +2y = 12
6y=0
y=0

Now solve for x, x=3+y=3+0=3

x=3, y=0

Answer 3

Of course, they didn't ask for value of y. No harm.