3 problem equation

Question

-21x-2y+1=-1

12x+1=9

-24x-2y+1=-14

 

Answer 1

You cannot really do anything with an equation, besides write it differently, if there are 2 variables (x and y). 

 

The answer to the middle equation is x = 5/6

Answer 2

I think you might be missing a part of this problem. or have something wrong in one of the equations.