To get 14 liters of antifreeze solution, how much doI need to add to x liters of the solution?

Let us make 'y' the unknown liter that should be added to x liters to make 14 liters,
Mathematical expression,
[tex]xliter+y=14\text{liters}[/tex]Let us now make y the subject of formula,
[tex]\begin{gathered} y=14\text{liters}-\text{xliter} \\ y=(14-x)\text{liters} \end{gathered}[/tex]Hence, the amount of liters that must be added to x liter to get 14 liter of antifreeze s