Sagot :
360 = 2 x 180 = 2x2x90 = 2x2x2x45 = 2x2x2x3x15 = 2x2x2x3x3x5
308 = 2x154 = 2x2x77 = 2x2x7x11
308 = 2x154 = 2x2x77 = 2x2x7x11
360 / 2 = 180
180 / 2 = 90
90 / 2 = 45
45 / 5 = 9
9 / 3 = 3
3 / 3 = 1
360 = 2³ * 3² * 5
308 / 2 = 154
154 / 2 = 77
77 / 7 = 11
11 / 11 = 1
308 = 2² * 7 * 11
Le seul facteur commun est 2²; donc :
308 / 360 = (2² * 7 * 11) / (2³ * 3² * 5) = (7 * 11) / (2 * 3² * 5) = 77 / 90