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bonjour, remarque ; 19 x 4 = 76 21 x 19 = 399 /76 = 5.25 14 x 19 = 266 /76 = 3.5 5.25 - 3.5 = 1.75 1.75 x 12 = 21 21 x 76 = 1596 / 19 = 84 1596 / 12 = 133 133 / 19 = 7 et 84 / 12 = 7 donc 21+ 7 = 28 ( 10 = 10 ) merci