Coucou !
c.
[tex]5x + 11 = 3x + 3 \\ 2x = - 8 \\ x = \frac{ - 8}{2} = - 4[/tex]
d.
[tex]7x - 6 = 4 - 3x \\ 10x = 10 \\ x = 1[/tex]
e.
[tex]12 - x = 18 - 3x \\ 2x = 6 \\ x = \frac{6}{2} = 3[/tex]
f.
[tex]3(7 - 2x) - 5(x + 1) = 0 \\ 21 - 6x - 5x - 5 = 0 \\ - 11x + 16 = 0 \\ x = \frac{ - 16}{ - 11} = \frac{16}{11} [/tex]
g.
[tex]4(x - 5) = 6( - x + 2) \\ 4x - 20 = - 6x + 12 \\ 10x = 32 \\ x = \frac{32}{10} = 3.2[/tex]