Quelq'un peux m'aider svp a) 5sur3x = 4 b) 2x - 11 = 7x + 4

a) 5 / 3x = 4

3x * 4 = 5

12 x= 5

x = 5/12

b) 2x - 11 = 7x + 4

2x - 7x = 4+11

-5x = 15

x = 15/(-5)

x = -3