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

solve for \(y\) in the second equation, you get \(y=x-3\) substitute that in to the first equation get
\[4x+2(x-3)=12\] or
\[4x+2x-6=12\] solve that one for \(x\)

Answer 2

combine like terms to get
\[6x-6=12\] then add \(6\) to both sides and divide by 6 to finish

Answer 3

3?

Answer 4

yes that would do it

Answer 5

thank you!