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J’ai besoin d’aide svp Exercice 1:
Supprimer les parenthèses :
A = 1 + (2 - x)
B = (2x - 4) + (5x - 6)
C = 3x + (4 - 7x)
D = (7-3x) + (4 - 5x)
E = 5 + (2t + 3)
F = 5t - (3 – 4t)
G = (t - 4) - 6
H = - (-3-1) + (e - 3)
I = (4t +2) + (-6t - 2)
J = 8a - (5a + 2) + (3 - 4a)
K = (x + 3) + (2x - 4)
L = -(8a + 3) -5a
M = (3u + 7) + (-54 + 3)
N = 5w - 6 - (7 - 2w) +4w
P = (3-42) - (-22 + 8)
Q = 4d + (5-70)
R = -(x + 4) + (-2x - 2)
S = 9+ (-22 + 8)
T = 4 + 6f - (-f + 7)
U = 322 - (z + 2) + (4z2-5)

Sagot :

VINS

bonjour

je te montre , je ne les fais pas tous

A = 1 + (2 - x) = 1 + 2 - x = - x + 3

B = (2x - 4) + (5x - 6) = 2 x - 4 + 5 x - 6 =  7 x  - 10

C = 3x + (4 - 7x)  = 3 x + 4 - 7 x = - 4 x + 4

D = (7-3x) + (4 - 5x) = 7 - 3 x + 4 - 5 x = - 8 x + 11

E = 5 + (2t + 3) = 5 + 2 t + 3 = 2 t + 8

F = 5t - (3 – 4t) = 5 t - 3 + 4 t =  9 t - 3

G = (t - 4) - 6 = t - 4 - 6 = t - 10

H = - (-3-1) + (e - 3) = 3 + 1 + e - 3  = e + 1

I = (4t +2) + (-6t - 2) = 4 t + 2 -  6 t - 2 = - 2 t  

continue

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