bonsoir quelqu’un pourrez m’aider svp merci

bonsoir

I = 6 x + 3 - 4 x + 2  =  2 x + 5

j = - 6 - 2 x - 7 x = - 9 x -  6

K = 3 - 7 x + 2 - 5 x + 2 =  - 12 x + 7

L = 6  + 2 x + 3 - 5 x + 1  = - 3 x + 10

Explications étape par étape:

I = 6x + 3 - (4x - 2)

= 6x + 3 - 4x + 2

= 6x - 4x + 3 + 2

= 2x + 5

j = - ( 6 + 2x ) - 7x

= - 6 - 2x - 7x

= - 2x - 7x - 6

= - 9 - 6

= - 15

K = 3 - ( 7x - 2 ) - ( 5x - 2 )

= 3 - 7x + 2 - 5x + 2

= 3 + 2 + 2 - 7x - 5x

= 7 - 12x

L = 6 - ( - 2x - 3 ) - ( 5x - 1 )

= 6 + 2x + 3 - 5x + 1

= 6 + 3 + 1 + 2x - 5x

= 10 - 3x