solve system of linear equation using any method

2x+3y=-1 x+5y-2z=-16
5x+2y=14 that's number 1 number 2 is -x-7y+3z=23
3x-10y-5z=5

so you've given:
2x+3y=-1
x+5y-2z=-16
5x+2y=14
-x-7y+3z=23
3x-10y-5z=5

are you sure you haven't given equations for more than 1 problem? Usually you will have the same number of equations as unknown variables but you have 5 equations and 2 unknown variables. Please try to revise your question so we can help you understand how to do these sorts of problems.

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