Question

solve the proportion-9/b=5/6

Answer 1

b = -10 4/5

Explanation:

-9/b = 5/6

cross multiply:

$\begin{gathered} \frac{-9}{b}=\frac{5}{6} \\ -9(6)\text{ = 5(b)} \end{gathered}$$\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}$

b = -54/5 = -10 4/5