Bonjour !
a)
[tex]3x = 8 \\ x = \frac{8}{3} [/tex]
b)
[tex]x - 4 = - 1 \\ x = 3[/tex]
c)
[tex]3x + 2 = 5 \\ 3x = 3 \\ x = \frac{3}{3} = 1[/tex]
d)
[tex]x - 2 = 6x + 3 \\ - 5x - 2 = 3 \\ - 5x = 5 \\ x = \frac{5}{ - 5} = - 1[/tex]
e)
[tex]4x - 7 = - 3x + 1 \\ 7x - 7 = 1 \\ 7x = 8 \\ x = \frac{8}{7} [/tex]
Bonne journée
