Bonjour je n'arrive pas cet exercice svp Exercice : Ecrire sans parenthèses (en appliquant les bonnes règles) et réduire :
B = 3x + 5(7 – 4x) – 4x – (7x - 2)
C = 2x – [5 – (3 - 2x)] + 3(9x – 4)
D=9+ 2[7 + 3(4x - 1)] - 6(2 - x)​
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