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Rezolva in R inecuatia dubla:1<3x-2<7

Răspuns :

[tex]1<3x-2<7,\;adun\breve{a}m\;pe\;2:\;3<3x<9,\\\\imp\breve{a}r\c{t}im\;cu\;3:\;1<x<3,\;deci\;x\in(1,\;3).[/tex]

Green eyes.