Bonjour !
[tex]2x + 2 = 5 + x \\ x + 2 = 5 \\ x = 3[/tex]
----------------------------
[tex]3x + 3 = -x-1 \\ 4x + 3 = - 1 \\ 4x = 4 \\ x = - 1 [/tex]
----------------------------
[tex]2x + 5 = 6x - 7 \\ - 4x + 5 = - 7 \\ - 4x = - 12 \\ x = \frac{ - 12}{ - 4} = 3[/tex]
----------------------------
[tex]-7x + 3 = 4 + x \\ - 8x + 3 = 4 \\ - 8x = 1 \\ x = \frac{ - 1}{8} [/tex]
----------------------------
[tex]3x - 2 = x + 11 \\ 2x - 2 = 11 \\ 2x = 13 \\ x = \frac{13}{3} [/tex]
----------------------------
[tex]-3x - 9 = −1+7x \\ - 10x - 9 = - 1 \\ - 10x = 8 \\ x = \frac{8}{ - 10} = - 0.8 [/tex]
Bonne journée
