bonsoir
Écrire les fractions suivantes sous forme irréductible.
324/84
= (4 x 9 x 3 x 3)/(3 x 4 x 7)
= (12 x 27)/(12 x 7)
= 27/7
84/2646
= (3 x 2 x 2 x 7)/(2 x 7 x 3 x 63)
= (42 x 2)/(42 x 63)
= 2/63
2646/324
= (2 x 7 x 3 x 9 x 7)/(9 x 6 x 6)
= (54 x 49)/(54 x 6)
= 49/6
