Bonjour,
K = (5x + 2) - (7x + 3)
K = 5x + 2 - 7x - 3
K = -2x -1
L = -(9x + 5) + (14x - 7)
L = -9x - 5 + 14x - 7
L = 5x - 12
M = (3x - 4) - (7x + 6) + (4x + 2)
M = 3x - 4 - 7x - 6 + 4x + 2
M = 7x - 7x - 10 + 2
M = -8
N = 3x + (4x - 3) - (6x - 3)
N = 3x + 4x - 3 - 6x + 3
N = x
O = -(12x + 8) + 2x + (14x + 5) - 9x
O = -12x - 8 + 2x + 14x + 5 - 9x
O = -21x + 16x - 8 + 5
O = -5x - 3
P = (10x + 4) - (6x + 15) + 17
P = 10x + 4 - 6x - 15 + 17
P = 4x + 21 - 15
P = 4x + 6
Bon recopiage et bonne journée !
