Réponse :
Explications étape par étape
Bonjour
A = 4/10 + 4/6
A = (4 x 3)/(10 x 3) + (4 x 5)/(6 x 5)
A = 12/30 + 20/30
A = 32/30
A = (2 x 16)/(2 x 15)
A = 16/15
B = 10/9 + 1
B = 10/9 + 9/9
B = 19/9
C = 5/2 - 1/2
C = 4/2
C = 2
D = 7/7 - 7/4
D = 1 - 7/4
D = 4/4 - 7/4
D = -3/4
E = 8/21 + 5/3
E = 8/21 + (5 x 7)/(3 x 7)
E = 8/21 + 35/21
E = 43/21
F = 9/2 - 3
F = 9/2 - 6/2
F = 3/2
G = 10/2 - 1/9
G = (10 x 9)/(2 x 9) - (1 x 2)/(9 x 2)
G = 90/18 - 2/18
G = 88/18
G = (2 x 44)/(2 x 9)
G = 44/9
H = 8,7 - 8/3
H = 87/10 - 8/3
H = (87 x 3)/(10 x 3) - (8 x 10)/(3 x 10)
H = 261/30 - 80/30
H = 181/30
I = -9/5 + 4/2
I = (-9 x 2)/(5 x 2) + (4 x 5)/(2 x 5)
I = -18/10 + 20/10
I = 2/10
I = 2/(2 x 5)
I = 1/5
