Réponse :
U = 7/4 - (- 1 /8 - 3/10)
U=7/4+1/8+3/10
U=70/40+5/40+12/40
U=87/40
V = 1 - 8/5 - (-3/2 - -7/10)
V=1-8/5+3/2-7/10
V=10/10-16/10+15/10-7/10
V=2/10
V=1/5
W = 3/4 -(-5/12 -1/3 )+ (- 2 - 1/6)
W=3/4+5/12+1/3-2-1/6
W=9/12+5/12+4/12-24/12-2/12
W=-8/12
W=-2/3
X = 7/8 - ( - 1/4 + -7/2) + 3/16
X=7/8+1/4+7/2+3/16
X=14/16+4/16+56/16+3/16
X=77/16
Bonsoir,
U = 7/4 - (- 1 /8 - 3/10)
U = (7 x 10) / (4 x 10) - [(- 1 x 5) / (8 x 5) - (3 x 4) / (10 x 4)]
U = 70/40 - (- 5/40 - 12/40)
U = 70/40 - (- 17/40)
U = 70/40 + 17/40
U = 87/40
V = 1 - 8/5 - (-3/2 - -7/10)
V = (1 x 10) / (1 x 10) - (8 x 2) / (5 x 2) - [(- 3 x 5) / (2 x 5) + 7/10]
V = (10/10 - 16/10) - (- 15/10 + 7/10)
V = - 6/10 - (- 8/10)
V = - 3/10 + 8/10
V = 2/10
V = (2 x 1) / (2 x 5)
V = 1/5.
W = 3/4 -(-5/12 -1/3 )+ (- 2 - 1/6)
W = (3 x 3) / (4 x 3) - [- 5/12 - (1 x 4) / (3 x 4)] + [(- 2 x 12) / (1 x 12) - (1 x 2) / (6 x 2)]
W = 9/12 - (- 5/12 - 4/12) + (- 24/12 - 2/12)
W = 9/12 - (- 9/12) - 26/12
W = 9/12 + 9/12 - 26/12
W = 18/12 - 26/12
W = - 8/12
W = (4 x - 2) / (4 x 3)
W = - 2/3.
X = 7/8 - ( - 1/4 + -7/2) + 3/16
X = (7 x 2) / (8 x 2) - [(- 1 x 4) / (4 x 4) - (7 x 8) / (2 x 8)] + 3/16
X = 14/16 - (- 4/16 - 56/16) + 3/16
X = 14/16 - (- 60/16) + 3/16
W = 17/16 + 60/16
W = 77/16