Réponse :
Explications étape par étape
Bonjour
Simplifier au maximum les fractions suivantes. Écrivez le détail des étapes de calcul !
A=24x28/18X4
A = (6 x 4 x 7 x 4)/(6 x 3 x 4)
A = 28/3
B=15x12/9x25
B = (3 x 5 x 3 x 4)/(3 x 3 x 5 x 5)
B = 4/5
EXERCICE 2:
Calculer les expressions suivantes et simplifier au maximum. Écrivez le détail des étapes de calcul !
C=13/30 - 24/30
C = (13 - 24)/30
C = (-11/30)
D=2/7 - 42/63
D = (2 x 9)/(7 x 9) - 42/63
D = 18/63 - 42/63
D = (18 - 42)/63
D = (-24/63)
E=17/12+ 3/24 - 1/12
E = (17 x 2)/(12 x 2) + 3/24 - (1 x 2)/(12 x 2)
E = 34/24 + 3/24 - 2/24
E = (34 + 3 - 2)/24
E = 35/24
F=4/5 + 1 - 3/10
F = (4 x 2)/(5 x 2) + 10/10 - 3/10
F = 8/10 + 10/10 - 3/10
F = (8 + 10 - 3)/10
F = 15/10
F = (3 x 5)/(2 x 5)
F = 3/2
G= 8/6 : (-32/48)
G = 8/6 x (-48/32)
G = (8 x (-6) x 8) / (6 x 8 x 4)
G = -8/4
G = -2
H= 6/35 X 5/6
H = 6/6 x 5/35
H = 5/(7 x 5)
H = 1/7
I= 1/3 X 4/5 : 2/15
I = 1/3 x 4/5 x 15/2
I = (1 x 4 x 15)/(3 x 5 x 2)
I = 4/2
I = 2
J= 3-1/4 / -3+1/8
J = (3 - 1/4) / (-3 + 1/8)
J = (12/4 - 1/4) / (-24/8 + 1/8)
J = 11/4 / (-23/8)
J = 11/4 x (-8/23)
J = (11 x -8)/(4 x 23)
J = 11/23 x -8/4
J = 11/23 x -2
J = -22/23