Bonjours a tous j'ai besoin d'aide svp: U = 7/4 - (- 1 /8 - 3/10) V = 1 - 8/5 - (-3/2 - -7/10) W = 3/4 -(-5/12 -1/3 )+ (- 2 - 1/6) X = 7/8 - ( - 1/4 + -7/2) +

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