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bonjour

D  = 5 + ( 1 + 1/8) : 3 /4

D = 5 + ( 8/8 + 1/8) : 3/4

D = 5 + 9/8  : 3/4

D = 5 + 9/8 * 4/3

D = 5 + 36/24

D = 5 + 3/2

D =  10/2 + 3/2

D = 13/2

G = 7/3 - 4/3 : 2/5

G = 7 /3 - 4/3 * 5/2

G = 7/3 - 20/6

G = 14/6 - 20/6

G = - 6 /6

G = - 1

Bonjour !

D = 5 + (1 + 1/8) : 3/4

D = 5 + (8/8 + 1/8) : 3/4

D = 5 + 9/8 * 4/3

D = 5 + 36/24

D = 5 + 9/6

D = (5 * 6)/(1 * 6) + 9/6

D = 30/6 + 9/6

D = 39/6 = (13 * 3)/(3 * 2) = 13/2.

E = 7/3 - 4/3 : 2/5

E = 7/3 - 4/3 * 5/2

E = 7/3 - 20/6

E = 14/6 - 20/6

E = -6/6 = -1.

Bonne journée !