Answer
-1/3
Work Step by Step
Solving for $y$, we find:
$$-4x=7y+5xy \\ y=\frac{-4x}{7+5x} \\ y=\frac{-4(1)}{7+5(1)} \\ y=-\frac{1}{3}$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.