Aidez-moi SVP

Effectuer les calculs suivants et donner le résultat sous la forme d'une fraction simplifiée :

A=3/36x45/2 B=36/35x21/32 C=1/15x27/4 D=20/27x63/20 E=25/36x6/35 F=80/63X9/80 G=16/35x35/32 H=63/100x100/21


Merci d'avance

2

Réponses

Meilleure réponse !
2014-01-18T14:50:31+01:00
A=3/36x45/2
A=135/72
A=15x9/9x8
A=15/8

B=36/35x21/32
B=756/1120
B=14x54/14x80
B=54/80
B=27x2/20x2
B=27/20

C=1/15x27/4
C=27/60
C=3x9/3x20
C=9/20

D=20/27x63/20
D=1260/540
D=18x70/18x30
D=70/30
D=10x7/10x3
D=7/3

E=25/36x6/35
E=150/1260
E=10x15/10x126
E=15/126
E=3x5/42x3
E=5/42

F=80/63x9/80
F=720/5040
F=60x12/60x84
F=12/84
F=6x2/6x14
F=2/14=1/7

G=16/35x35/32
G=560/1120
G=40x14/40x28
G=14/28=2x7/4x7
G=2/4=1/2

H=63/100x100/21
H=6300/2100
H=100x63/100x21
H=63/21=7x9/7x3=9/3
H=3x3/3x1
H=3/1=3
2014-01-18T14:55:20+01:00

je te met directement les réponses A=135/72 ÷: 3/3=45/24

                                                        B= 1260/1120 ÷140/140 =9/8

                                                         C=27/60 ÷ 3/3 =9/20

                                                        D=63/20

                                                        E=5/42

                                                        F=9/63 ÷ 3/3 =3/11

                                                        G=16/32 ÷ 4/4 =4/8 ÷ 4/4 =1/2

                                                        H=63/21 ÷3/3 =11/7

et voila j'éspere que je t'ai bien aidé