j'ai besoin d'aide exercice de math aidez moi pour demain merci ​

Bonsoir,

a) 13 + (x - 6) = 13 + x - 6 = x + 7

b) -5 - (4 - 2x) = -5 - 4 + 2x = 2x - 9

c) 10 - (x + 3) + (-3x + 6) = 10 - x - 3 - 3x + 6 = -4x + 13

d) (5 + 2x) - (-7 - 7x) = 5 + 2x + 7 + 7x = 9x + 12

e) x - 8 - (2 + 4x - (9 - 5x)) = x - 8 - (2 + 4x - 9 + 5x)

= x - 8 - 2 - 4x + 9 - 5x = -8x - 1

Bonne soirée !

A)13+(X-6)

=13+X-6

=7+X

B)-5-(4-2X)

=-5-4+2X

=-9+2X

C)10-(X+3)+(-3X+6)

=10-X-3-3X+6

=7-X-3X+6

=7-4X+6

=13-4X

D)(5+2X)-(-7-7X)

=5+2X+7+7X

=12+2X+7X

=12+9X

E)X-8-(2+4X-(9-5X)

=X- 8 - 2 - 4X+ 9 - 5X

=-3X-8-2+9-5X

=-8X-8-2+9

=-8X-10+9

=-8X-1