The extraction of iron from iron(III) oxide in an industrial blast furnace occurs through a series of stepwise reduction reactions using carbon monoxide, \(\text{CO(g)}\), as summarized in the table below.

Reaction	Chemical equation	\(\Delta H^\circ\ (\text{kJ/mol}_{\text{rxn}})\)
1	\(3\,\text{Fe}_2\text{O}_3\text{(s)} + \text{CO(g)} \rightarrow 2\,\text{Fe}_3\text{O}_4\text{(s)} + \text{CO}_2\text{(g)}\)	\(-45\)
2	\(\text{Fe}_3\text{O}_4\text{(s)} + \text{CO(g)} \rightarrow 3\,\text{FeO(s)} + \text{CO}_2\text{(g)}\)	\(+21\)
3	\(\text{FeO(s)} + \text{CO(g)} \rightarrow \text{Fe(s)} + \text{CO}_2\text{(g)}\)	\(-18\)

Based on the data in the table, what is the standard enthalpy change, \(\Delta H^\circ\), for the overall reduction of iron(III) oxide represented by the equation below?
\[ \text{Fe}_2\text{O}_3\text{(s)} + 3\,\text{CO(g)} \rightarrow 2\,\text{Fe(s)} + 3\,\text{CO}_2\text{(g)} \]