3sur8 fois 4sur9 plus 2sur3
3/8 x 4/9 + 2/3 = 3 x4 + 2 = 1/3 +2/3 = 3/3= 1
4x3x3 3
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3/8 x 4/9 + 2/3 = 3 x4 + 2 = 1/3 +2/3 = 3/3= 1
4x3x3 3