Bonsoir
a) 153/117 =(17×9)/(13×9) ...on simplifie par 9 la fraction
153/117 = 17/13
b) 117/221 =(9×13)/(17×13) ..... on simplifie par 13 la fraction
117/221 = 9/ 17
c) 153/221 = (9×17)/(13×17) .... on simplifie la fraction par 17
153/221 = 9/13
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Bonsoir
a) 153/117 =(17×9)/(13×9) ...on simplifie par 9 la fraction
153/117 = 17/13
b) 117/221 =(9×13)/(17×13) ..... on simplifie par 13 la fraction
117/221 = 9/ 17
c) 153/221 = (9×17)/(13×17) .... on simplifie la fraction par 17
153/221 = 9/13