bonjour qlq peut m'aider svppp

bonjour

Résoudre les équations suivantes :

4(x + 5) = 10x + 3

4 * x + 4 * 5 = 10x + 3

4x + 20 = 10x + 3

20 - 3 = 10x - 4x

17 = 6x

[tex]\bf{x = 17/6}[/tex]

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

3 * x - 3 * 2 = 6 * x + 6 * 4

3x - 6 = 6x + 24

-6 - 24 = 6x - 3x

-30 = 3x

x = -30/3

[tex]\bf{x = -10}[/tex]

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

7x - 5x - 3 = 5x - 15 + 2

2x - 3 = 5x - 13

5x - 2x = 13 - 3

3x = 10

[tex]\bf{x = 10/3}[/tex]

7(n + 2) - 3 = 25 - (3n + 4)

7n + 14 - 3 = 25 - 3n - 4

7n + 11 = 21 - 3n

7n + 3n = 21 - 11

10n = 10

n = 10/10

[tex]\bf{n = 1}[/tex]

4y + 3(4y - 2) = 3(y + 1)

4y + 12y - 6 = 3y + 3

16y - 6 = 3y + 3

16y - 3y = 3 + 6

13y = 9

[tex]\bf{y = 9/13}[/tex]