Solve the following differential equation: `(x+y+1)(dy)/(dx)=1`

Explanation

`
(x+y+1) frac{d y}{d x}=1
`


`
frac{d y}{d x}=frac{1}{x+y+1}
`


Use , `u=x+y Rightarrow frac{d u}{d x}=1+frac{d y}{d x}
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