[tex]\begin{gathered} \text{if F'=(3,7) first we will do the opposite operation, that is; reflect over y=3 and then over x=-2, reflecting over y=3} \\ we\text{ have F'=(3,-1)} \\ \text{and now if we reflect over x=-2 is } \\ F=(-7,-1) \\ \\ \text{Thus the answer is (-7,-1)} \end{gathered}[/tex]