bonjour vous pouver résoudre les équation suivante svp A) 3x + 7 = 0 B) -2x - 5 = 0 C) x = 2x - 7 D) 3 - 2x = x - 8 E) x+4 ÷ 7 = 2

A ) 3x =-7
     x =-7/3

B) -2x =5
     x =-5/2

C) x-2x = -7
     -x = -7
     x = 7

D) -2x-x = -3-8
     -3x =-11
     x =11/3

E) x+[tex] \frac{4}{7} [/tex] = 2
     x = [tex] \frac{-4}{7} [/tex]+[tex] \frac{14}{7} [/tex]
     x = [tex] \frac{10}{7} [/tex]
    

3x + 7 = 0
3x = - 7
x = - 7/3

S= {- 7/3}

- 2x - 5 = 0
- 5 = 2x
- 5/2 = x

S= {- 5/2}

x = 2x - 7
7 = 2x - x
7 = x

S= {7}

3 - 2x = x - 8
3 + 8 = x + 2x
11 = 3x
11/3 = x

S= {11/3}

x + 4/7 = 2
7x + 4 = 14
7x = 14 - 4
7x = 10
x = 10/7

S= {10/7}