



 
Hi Michael, Looking at the equations \begin{eqnarray*} The immediate task is to eliminate one of the variables so that you have one equation in one unknown. You can achieve this by multiplying the first equation by 3 and the second equation by 2. This will result in two equations with the same coefficient for $P.$ Then if you subtract the two equations you will be left with one equation in the variable $V.$ Try this and if you need further help let us know what you got and where you are stuck,  


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