Using the delta Gº’ values for the reactions shown below, what is the delta Gº’ value for the conversion of phosphoenolpyruvate (PEP) to 3-phosphoglycerate (3PGA) by the enzymes enolase and phosphoglycerate mutase in the gluconeogenic pathway?

Miesfeld Biochemistry at University of Arizona
Using the delta Gº’ values for the reactions shown below, what is the delta Gº’ value for the conversion of phosphoenolpyruvate (PEP) to 3-phosphoglycerate (3PGA) by the enzymes enolase and phosphoglycerate mutase in the gluconeogenic pathway?