Réponse :
Bonjour
Explications étape par étape
Réductions des fractions suivantes :
D =3/6 - 7/15
D = 3/6 X 15/15 -7/15 X 6/6
D = 45/90 - 42/90
D = 3/90 = 1/30
F = 8/7 + 3/5
F = 8/7 X 5/5 + 3/5 X 7/7
F = 40/35 + 21/35
F = 61/35
G = 1/2 + 4/5
G = 1/2 X 5/5 + 4/5 X 2/2
G = 5/10 + 8/10
G = 13/10
H = 7/28 - 6/21
H = 7/28 X 21/21 - 6/21 X 28/28
H = 147/588 - 168/ 588
H = -21/588
H = - 7/196
H = - 1/28
