bonjour
45/24 x 8/9 = 5/3 , tu ramènes à 5/3 x 1/1
63/36 x 12/81 = 7./35 ( 7/3 x 1/9)
32/27 x 54/28 = 16 /7 ( 8/1 x 2/7)
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bonjour
45/24 x 8/9 = 5/3 , tu ramènes à 5/3 x 1/1
63/36 x 12/81 = 7./35 ( 7/3 x 1/9)
32/27 x 54/28 = 16 /7 ( 8/1 x 2/7)