Réponses

  • Utilisateur Brainly
2013-11-03T15:58:41+01:00
Simplifier 4/32 
4/32=(4x1)/(4x8)=1/8

Simplifier 198/220 
198/220=(9x22)/(10x22)=9/10

Simplifier 455/819

455/819=(91x5)/(91x9)=5/9
2013-11-03T16:08:37+01:00
Je vais calculer les PGCD en utilisant la méthode de la division euclidienne.

32 = 4 x 8 + 0
PGCD ( 32 ; 4 ) = 4
 \frac{4}{32} =  \frac{4 * 4}{4*32} =  \frac{1}{8}

220 = 198 x 1 + 22
198 = 22 x 8 + 0
PGCD ( 220 ; 198 ) = 22
 \frac{198}{220} =  \frac{22 * 198}{22 * 220} =  \frac{9}{10}

819 = 455 x 1 + 364
455 = 364 x 1 + 91
364 = 91 x 4 + 0
PGCD ( 819 ; 455 ) = 91
 \frac{455}{819} =  \frac{91 * 455}{91 * 819} =  \frac{5}{9}