The x-coordinate of the solution to the system of equations is 1 unit. 
What is a system of equations?
"A 'system' of equations is a set or collection of equations that you deal with all together at once. Linear equations (ones that graph as straight lines) are simpler than non-linear equations, and the simplest linear system is one with two equations and two variables."
"A solution for a single equation is any point that lies on the line for that equation. A solution for a system of equations is any point that lies on each line in the system."
Since, the given equation are 
[tex]y  = -x - 2[/tex] ----------------------- eq 1 
and [tex]y = 2x - 5[/tex]  -------------------eq 2 
now solving them, 
subtracting eq 2 from eq 1 
we get, 
3x = 3 
x = 1  and y = -3 
Hence, the x-coordinate of the solution to the system of equations is 1 and y coordinate is -3.
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