Salut, j'ai vraiment besoin d aide !!!
Il faut calculer les expressions!
Merci
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B = -(1/3x+2) + (5x-3)
b = - (x/3+2) + (5x-3)
B = - (3x/3+6/3) +(15x/3-9/3)
B = -3x-6+15x-9 = 12x -15
C = (2/3x+1/3)- (5/6+2/6x)
C = (4x/6+2/6) - (5/6+2x/6)
C = 4x+2-5-2x = 2x-3
D = 1/2+2x - (x-3/2)
D = 1/2+4x/2 - (2x/2-3/2)
D = 1+4x-2x+3
D = 2x+4