Which has more potential chemical energy?

I've tried my hardest to solve it, but I was never good at Hess' law. What you wanna do here is simplify the 3 equations into one so you have only F2 and CIF on one side (or two seperate equations where CIF and F2 or both alone). You subtract the chemical when they are on opposite sides of the arrow, and add the when they are on the same side (this after you combine equations). To get the right coefficients, you first have to multiply the entire equation by a number - you'd also have o multiply the delta H by it as well. If you flip the equation before you add all of them, you do so and change the enthalpy from positive to negative or vice versa. After you get a simplified equations, you have to add the enthalpies. If the enthalpy is negative, the reactants have more enrgy because the products lost energy. If it's positive, then the products have more energy.