They are two equations in two unknown variables (x and y), which are inconsistent. That is to say, there is no simultaneous solution.
An alternative approach is to say that they are the equations of two lines in the Cartesian plane. The lines are parallel and so they do not meet indicating that there is no simultaneous solution.
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-2x plus 3y equals 1
NM equals 2x + 1, as stated in the question!
The answer to 1 over 2x plus 13 equals 9 is x equals -8.
x equals 4
no x would be 0.5 because two times 0.5 is 1 ( 2x ) and then add 7 equals 8 ( plus seven equals 8 )