Combiné fait : 7x-(5x+3)=5(x-3)+2 Merci d'avance

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

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

2x-3 = 5x-13

5x-2x = 13-3

3x = 10

donc x = 10/3

Bonjour,

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

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

2x-3=5x-13

2x-5x=-13+3

-3x=-10

x=10/3

S={10/3}