mohon bantuannya mau dikumpul sebentar

a.
[tex] \frac{x}{3} + \frac{x}{2} \\ = \frac{2x + 3x}{6} \\ = \frac{5x}{6}[/tex]
b.
[tex] \frac{5}{(x + 2)} - \frac{3}{(x + 1)} \\ = \frac{5(x + 1) - 3(x + 2)}{(x + 2)(x + 1)} \\ = \frac{5x + 5 - 3x - 6}{x ^{2} + x + 2x + 2 } \\ = \frac{2x -1}{x ^{2} + 3x + 2} [/tex]
Maaf Kalau Salah