Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.)

Question

x-3y+2z=21
5x-13y+12z=81

I have an answer but i'm not sure if it's right.

Answer 1

I have (x,y,z)=(-5a-15,-a-5,a)

Answer 2

Thanks, Ms.Sue! You are amazing!