SOLUTION: X(1+2i)+y(3+5i)=-3

(1) Expand the left hand side:

(2) Combine real and imaginary parts on the left hand side; write the right hand side in a+bi form:

(3) Equate the coefficients of the real parts and imaginary parts on the two sides:

(4) Solve the pair of equations

I leave that much to you....

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