Bonjour !

A = 3(x + 6) + 2

A = 3*x + 3*6 + 2

A = 3x + 18 + 2

A = 3x + 20

B = 4 + 3(2y - 2)

B = 4 + 3*2y - 2*3

B = 4 + 6y - 6

B = 6y - 2

C = 7(2x + 2) - 6

C = 7*2x + 7*2 - 6

C = 14x + 14 - 6

C = 14x + 8

D = 9(x - 6) + 2x

D = 9*x - 6*9 + 2x

D = 9x - 54 + 2x

D = 11x - 54

E = 3,5(2 - x) + 8,2

E = 3,5*2 - 3,5*x + 8,2

E = 7 - 3,5x + 8,2

E = -3,5x + 15,2

F = 2(3 + 5x) + 8(7 - x) + 4(x - 1)

F = 2*3 + 2*5x + 8*7 - x*8 + 4*x - 4*1

F = 6 + 10x + 56 - 8x + 4x - 4

F = 6x + 58

J'espère t'avoir aidé. Bon courage !