Répondre :

hirondelle52

Bonjour;

B=3+(x+6)

= 3+x+6

= x+9

C = (21-2x)

= 21-x

D = -(-x+7) + (4x + 1)

= x-7 +4x +1

= 5x -6

E=-(3-4x)+(7x-3)

= -3 +4x +7x -3

= 11x -6

ophelielacombe09

B = 3 + (x + 6)

B = 3 + x + 6

B = x + 9

C = (21 - 2x)

C = -2x + 21

D = -(-x + 7) + (4x + 1)

D = x - 7 + 4x + 1

D = 5x - 6

E = -(3 - 4x) + (7x - 3)

E = -3 + 4x + 7x - 3

E = 11x - 6

D'autres questions