Réponse :
simplifier les fractions
330/900 = 33/90 = 3 x 11/3 x 30 = 11/30
360/960 = 36/96 = 6 x 6/6 x 16 = 3/8
276/483 = 2 x 138/3 x 161 = 4 x 3 x 23/3 x 7 x 23 = 4/7
516/903 = 4 x 129/3 x 301 = 4 x 3 x 43/3 x 7 x 43 = 4/7
520/300 = 52/30 = 4 x 13/6 x 5 = 26/15
1110/1290 = 111/129 = 3 x 37/3 x 43 = 37/43
1660/1485 = 4 x 415/3 x 5 x 99 = 4 x 5 x 83/5 x 3 x 99 = 332/297
Explications étape par étape