b = -10 4/5
Explanation:-9/b = 5/6
cross multiply:
[tex]\begin{gathered} \frac{-9}{b}=\frac{5}{6} \\ -9(6)\text{ = 5(b)} \end{gathered}[/tex][tex]\begin{gathered} -54\text{ = 5b} \\ \text{divied both sides by 5:} \\ -\frac{54}{5}=\frac{\text{ 5b}}{5} \\ -\frac{54}{5\text{ }}=\text{ b} \end{gathered}[/tex]b = -54/5 = -10 4/5
