Charles has 24 marbles. He has 6 more yellow marbles than blue marbles.
Which equation represents this situation?
n+ (n + 6) = 24, where n is the number of yellow marbles
n + 6 = 24, where n is the number of yellow marbles
n + 6 = 24, where n is the number of blue marbles
n+ (n + 6) = 24, where n is the number of blue marbles
