Answer:
[tex] \boxed { - 4}[/tex]
Step-by-step explanation:
Substitute y = x-4 in the first equation.
[tex]3x - 2(x - 4) = 4[/tex]
Distribute -2 in the expression.
[tex]3x - 2x + 8 = 4 \\ x = 4 - 8 \\ x = - 4[/tex]
Because we only want to find the value of x.
Therefore the answer is -4.
