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## Homework Statement

The problem states: Use substitution to solve:

y'=1/(x+y)^2-1

## Homework Equations

## The Attempt at a Solution

I used the substitution of v=x+y

resulting in the answer y=[3(x-C)]^(1/3) - x

but I'm not too sure that's right

Can some help with the answer and the steps for getting it. It's just for a practice test so I'm not graded on it.