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x +3(x -1) -2.3 (x -3) = 0 x + 3x -3 - 6 . (x - 3) = 0 x + 3x -3 -6x +18 = 0 x +3x -6x = 3 -18 -2x = -15 x = -15/-2 x = +7,5
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x +3(x -1) -2.3 (x -3) = 0 x + 3x -3 - 6 . (x - 3) = 0 x + 3x -3 -6x +18 = 0 x +3x -6x = 3 -18 -2x = -15 x = -15/-2 x = +7,5