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90000-(42586-i)=64382

Răspuns :

90000-(42586-i)=64382490.000-42.586+i=643.824
47.414+i=643.824
i=643.824-47.414
i=596.410

[tex]90000-(42586-i)=64382 \\ 90000-42586+i=64382 \\ i=64382-90000+42586 \\ i=16968[/tex]