Question: how do I get rid of this msg Error, unable to match delimiters

Hey im trying to solve this equation of 2 order but its keeping giving me that starange error.

del:=(x^((1/(3)))*y^((2/(3)))(x)+x)*diff(x)+(x^((2/(3)))*y^((1/(3)))(x)+y(x))*diff(y(x))=0;
 

Can someone giude me on how to solve it

 

thanks.

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