Sagot :
Bonjour
Calculer et donner le résultat sous la forme d'une fraction :
E = 4/3 x (3/14 + 6/14)
E = 4/3 x 9/14
E = 36/42
E = (6 x 6) / (6 x 7)
E = 6/7
F = (55/6 - 5/2) : 20
F = [55/6 - (5 x 3) / (2 x 3)] : 20
F = (55/6 - 15/6) : 20
F = 40/6 : 20
F = 40/6 x 1/20
F = 40/120
F = (40 x 1) / (40 x 3)
F = 1/3
G = (25/14 - 5/14) x (4/5 + 16/15)
G = 20/14 x [(4 x 3) / (5 x 3) + 16/15]
G = 20/14 x (12/15 + 16/15)
G = 20/15 x 28/15
G = 560/225
G = (5 x 12) / (5 x 45)
G = 12/45
H = (9/5 + 7/10) x 3/4 - 1/4
H = [(9 x 2) / (5 x 2) + 7/10] x 3/4 - 1/4
H = (18/10 + 7/10) x 3/4 - 1/4
H = 25/10 x 3/4 - (1 x 10) / (4 x 10)
H = 75/40 - 10/40
H = 65/40
H = (5 x 13) / (5 x 8)
H = 13/8.