Bonjour
Supprime les parenthèses et réduis chaque expressions.
A= 5 + (2x + 3)
A = 5 + 2 x + 3
A = 2x + 8
B= 5x - (3 - 4x)
B = 5x - 3 + 4x
B = 5x + 4x - 3
B = 9x - 3
C= (x - 4) - 6
C = x - 4 - 6
C = x - 10
D= (4x +2) + (- 6x -2)
D = 4x + 2 - 6x - 2
D = 4x - 6x + 2 - 2
D = - 2x
E= - ( -3x - 1) + (x - 3)
E = 3x + 1 + x - 3
E = 3x + x + 1 - 3
E = 4x - 2
F= 8x - (5x + 2) + (3 - 4x)
E = 8x - 5x - 2 + 3 - 4x
F = 8x - 5x - 4x - 2 + 3
F = - x + 1.