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Mathematics, 17.06.2020 22:57 maysahdabest

Need help if (x+yi)+(2(x+yi)+3i)=9,what is x+yi?

Need help if (x+yi)+(2(x+yi)+3i)=9,what is x+yi?

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Need help if (x+yi)+(2(x+yi)+3i)=9,what is x+yi?
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