Solve a System of complex equatoins

[primer]

Hello

(10-03-2017 07:16 AM)kitsunekatari Wrote:  How do I solve a system of complex equations?

such as;

-12+(-i4+i5)*A-i3*B
(12+i6)*B-i3*A

Please first note those are not equations,
also important : on cas, you must use lowercase variable,
I added "=0" to have equations, and tried it :

csolve({-12+(4i+5i)*a-3i*b=0, (12+6i)*b-3i*a=0}, {a,b})

I got
{ (-16-8i)/(5-12i) , -4i/(5-12*i) }