X*0,76-y*0,5

It seems like you have a mathematical expression: \( x \cdot 0.76 - y \cdot 0.5 \). If you have specific questions about this expression or if you need assistance with solving or rearranging it, please provide more context or details! For instance, do you need to solve for one variable in terms of another, evaluate it for specific values of \( x \) and \( y \), or something else?