deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 50eb44f..15c2be8 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
%newline  \frac{\partial v}{\partial t }+ u\frac{\partial v}{\partial x}+v\frac{\partial v}{\partial y}-K\left(\frac{{\partial }^2v}{\partial x^2}+\frac{{\partial }^2v}{\partial y^2}\right)&=0 \\  %newline  \frac{\partial u}{\partial x} + \frac{\partial v}{\partial y} = &=  0 \end{align*}  \end{equation}