Select the correct choice below and fill in any answer boxes in your choice

In order to solve this equation, let's calculate the cross product of the fractions:
[tex]\begin{gathered} \frac{x}{x+7}=\frac{6}{5} \\ 5x=6(x+7) \\ 5x=6x+42 \\ 5x-6x=42 \\ -x=42 \\ x=-42 \end{gathered}[/tex]So the correct option is A.
The solution set is {-42}