Plz help I have this and i am being timed

Answer:
[tex] -\dfrac{13}{18} [/tex]
Step-by-step explanation:
[tex] -\dfrac{8}{9} - (-\dfrac{1}{6}) = [/tex]
[tex] = -\dfrac{8}{9} + \dfrac{1}{6} [/tex]
[tex] = -\dfrac{16}{18} + \dfrac{3}{18} [/tex]
[tex] = -\dfrac{13}{18} [/tex]