a+ ib > c+ id is meaningful only when
1)a=0 , c=0
2)b=0 , c=0

Dear Student,
Please find below the solution to the asked query:

$$\begin{gathered} \mathrm{We} \mathrm{have}: \\ \mathrm{a}+\mathrm{ib}>\mathrm{c}+\mathrm{id} \\ \mathrm{We} \mathrm{know} \mathrm{that} \mathrm{two} \mathrm{complex} \mathrm{numbers} \mathrm{cannot} \mathrm{be} \mathrm{compared} \mathrm{but} \mathrm{two} \mathrm{real} \mathrm{numbers} \\ \mathrm{can} \mathrm{be} \mathrm{compared}. \\ \mathrm{Hence} \mathrm{above} \mathrm{inequality} \mathrm{is} \mathrm{meaningful} \mathrm{if} \mathrm{imaginary} \mathrm{part} \mathrm{on} \mathrm{both} \mathrm{sides} \mathrm{is} 0. \\ \mathrm{Hence} \\ \boxed{\mathbf{b}\mathbf{=}\mathbf{0}\mathbf{ }\mathbf{and}\mathbf{ }\mathbf{d}\mathbf{=}\mathbf{0}} \left(\mathrm{Answer}\right) \end{gathered}$$

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