Is the dg for an exergonic reaction more than or less than zero? what about an endergonic reaction? in which type of reaction do the products have more energy than the reactants? why?

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

it is either c or d and i know for sure it is not a or b