Do the Equations Below Represent Coupled Reactions? If Not,why Not $\Delta$

question 39

Essay

Do the equations below represent coupled reactions? If not,why not?
A + B <-> C + D ( $\Delta$ G = -5.4 kcal/mole)
E + F <-> G + H ( $\Delta$ G = +4.4 kcal/mole)

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