Answer
First order, $\frac{dy}{dx} = c$
Work Step by Step
Substitute $y = c(1 + x)$ into $(1+x) \frac{dy}{dx} = y$
$(1+x) \frac{dy}{dx} = c(1 + x)$
$\frac{dy}{dx} = \frac{c(1 +x)}{1 + x}$
Simplify
$\frac{dy}{dx} = c$
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.