Hello.

Could you please help me in solving the following exercise?

1.-Let F be the field of complex numbers. Are the following two systems of linear equations equivalent?. If so, express each equation in each system as a linear combination of the equations in the other system.

$\displaystyle x-y= 0$

$\displaystyle 2x+y= 0$

$\displaystyle 3x+y= 0$

$\displaystyle x+y= 0$

Thanks a lot