Question 952041
Change all the equations to standard form and you can do some matrix operations or maybe
find some duplicates of any of them.


{{{system(y=2x+5,y-4x=-2,y=4x-(-2),2x+5=4x-2)}}}
'
{{{system(2x-y=5,-4x+y=-2,-4x+y=2,5=2x-2)}}}
'
{{{system(2x-y=5,4x-y=2,4x-y=-2,2x=7)}}}


That last equation means {{{x=7/2}}}.
Any solution of your system will need to include this value for x.  No restriction on y for it.


{{{system(7-y=5,14-y=2,14-y=-2,x=7/2)}}}


Do the first three equations agree?


{{{system(y=2,y=12,y=16,x=7/2)}}}
This very beginner-level process is showing different values for y, but all for the same x value.
They all need to agree but they do not agree.


NO SOLUTION.