Step-by-step explanation:
[tex] \frac{2b - 10}{3} \div \frac{b - 5}{9} [/tex]
[tex] \frac{2b - 10}{3} \times \frac{9}{b - 5} [/tex]
[tex] \frac{2(b - 5)}{1} \times \frac{3}{b - 5} [/tex]
[tex]2 \times 3[/tex]
[tex]6[/tex]
