1. Aflati x din proportia x supra 2 = 4a6 supra 5 stiind ca 4a6 este un numar natural de trei cifre divizibil cu 9 .

2. Aflati numerele x si y stiind ca 3x -y = 12 si x supra y = 3 supra 5 .

Va rog frumos ajutati.ma , multumesc .
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