résoudre 2x+1/x+1=0 , 2x-1 /x+3=1, x+2/4=x-2/3

Bonjour,

Résoudre

• (2x+1)/(x+1) = 0

[tex]x + 1 \ne 0[/tex]

[tex]x \ne -1[/tex]

2x + 1 = 0

2x = -1

x = -1/2

• (2x-1)/(x+3) = 1

[tex]x + 3 \ne 0[/tex]

[tex]x \ne -3[/tex]

2x - 1 = 1(x + 3)

2x - 1 = x + 3

2x - x = 3 + 1

x = 4

• (x+2)/4=(x - 2)/3

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

3x + 6 = 4x - 8

6 + 8 = 4x - 3x

x = 14