Sagot :
Réponse :
Bonsoir
Explications étape par étape :
1. 6 / 18 = 3 × 2 / 3 × 6 = 2 / 6 = 1 / 3
2. 100 / 30 = 10 × 10 / 10 × 3 = 10 / 3
3. 12 / 78 = 6 × 2 / 6 × 13 = 2 / 13
4. 2 000 / 10 000 = 2 × 1 000 / 10 × 1 000 = 2 / 10 = 1 / 5
5. 112 / 248 = 2 × 2 × 2 ×2 × 7 / 2 × 2 × 2 × 31 = 2 × 7 / 31 = 14 / 31
6. 396 / 234 = 2 × 2 × 3 × 3 × 11 / 2 × 3 × 3 × 13 = 2 × 11 / 13 = 22 / 13
7. 450 / 180 = 2 × 3 × 3 × 5 × 5 / 2 × 2 × 3 × 3 × 5 = 5 / 2
8. 147 / 168 = 3 × 7 × 7 / 2 × 2 × 2 × 3 × 7 = 7 / 8
Réponse :
Bonsoir
Explications étape par étape :
1)
6/18 = (6 × 1) /(6 × 3) = 1/3
2)
100/30 = (10 × 10) / (10 × 3) = 10/3
3)
12/78 = (6 × 2) / (6 × 13) = 2/13
4)
2 000 / 10 000 = (2 000 × 1) / (2 000 × 5) = 1/5
5)
112/248 = ( 8 × 14) / ( 8 × 31) = 14/31
6)
396/234 = (18 × 22) / (18 × 13) = 22/13
7)
450/180 = (5 × 90) / ( 2 × 90) = 5/2
8)
147/168 = (21 × 7) / (21 × 8) = 7/8