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Mathematics 21 Online
OpenStudy (anonymous):

-7<3x-1<8

sam (.sam.):

-7<3x-1<8 -6<3x<9 -2<x<3

OpenStudy (anonymous):

-7 <3x-1<8 -7 +1 < 3x -1 +1 < 8 + 1 -> -6 < 3x < 9 => -6/3 < x < 9/3 Thus -2 < x < 3

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