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2014-01-21T10:42:01+02:00
3x-1 supra 3 = 1 supra 6
=> 6(3x-1) = 3
=> 18x - 6 = 3
=> 18x = 8
=> x = 8 supra 18
=> x = 4 supra 9 ( x ∈ Q )
1 5 1