FRstudy.me: où vos questions rencontrent des réponses expertes. Trouvez des solutions fiables et rapides à vos problèmes avec l'aide de notre réseau de professionnels bien informés.
Sagot :
Bonjour,
1)
A = 1/7 - 5/7
A = - 4/7
B = 1/2 + 5/6
B = 1 x 3 / 2 x 3 + 5/6
B = 3/6 + 5/6
B = 8/6
B = 2 x 4 / 2 x 3
B = 4/3
C = 2/5 - 3/4
C = 2 x 4 / 5 x 4 - 3 x 5 / 4 x 5
C = 8/20 - 15/20
C = - 7/20
D = 3/4 x 7/11
D = 21/44
E = - 2/15 x 25/6
E = - 50/90
E = 10 x - 5 / 10 x 9
E = - 5/9
2)
A = 7/5 - 5/3 x 15/14
A = 7/5 - 75/42
A = 7 x 42 / 5 x 42 - 75 x 5 / 42 x 5
A = 294/210 - 375/210
A = - 81/210
A = 3 x - 27 / 3 x 70
A = - 27/70
B = 8/5 - 3/4 : 9/8
B = 8/5 - 3/4 x 8/9
B = 8/5 - 24/36
B = 8 x 36 / 5 x 36 - 24 x 5 / 36 x 5
B = 288/180 - 120/180
B = 168/180
B = 12 x 4 / 12 x 15
B = 4/15
C = 8/3 - 2/5
7/5
C = 8 x 5 / 3 x 5 - 2 x 3 / 5 x 3
7/5
C = 15/15 - 6/15
7/5
C = 9/15 : 7/5
C = 9/15 x 5/7
C = 45/105
C = 15 x 3 / 15 x 7
C = 3/7
1)
A = 1/7 - 5/7
A = - 4/7
B = 1/2 + 5/6
B = 1 x 3 / 2 x 3 + 5/6
B = 3/6 + 5/6
B = 8/6
B = 2 x 4 / 2 x 3
B = 4/3
C = 2/5 - 3/4
C = 2 x 4 / 5 x 4 - 3 x 5 / 4 x 5
C = 8/20 - 15/20
C = - 7/20
D = 3/4 x 7/11
D = 21/44
E = - 2/15 x 25/6
E = - 50/90
E = 10 x - 5 / 10 x 9
E = - 5/9
2)
A = 7/5 - 5/3 x 15/14
A = 7/5 - 75/42
A = 7 x 42 / 5 x 42 - 75 x 5 / 42 x 5
A = 294/210 - 375/210
A = - 81/210
A = 3 x - 27 / 3 x 70
A = - 27/70
B = 8/5 - 3/4 : 9/8
B = 8/5 - 3/4 x 8/9
B = 8/5 - 24/36
B = 8 x 36 / 5 x 36 - 24 x 5 / 36 x 5
B = 288/180 - 120/180
B = 168/180
B = 12 x 4 / 12 x 15
B = 4/15
C = 8/3 - 2/5
7/5
C = 8 x 5 / 3 x 5 - 2 x 3 / 5 x 3
7/5
C = 15/15 - 6/15
7/5
C = 9/15 : 7/5
C = 9/15 x 5/7
C = 45/105
C = 15 x 3 / 15 x 7
C = 3/7
Merci d'utiliser cette plateforme pour partager et apprendre. Continuez à poser des questions et à répondre. Chaque contribution que vous faites est appréciée. Chaque question a une réponse sur FRstudy.me. Merci de nous choisir et à très bientôt.