A bag contains green marbles and blue marbles, 24 in total. The number of green marbles is 9 less than 2 times the number of blue marbles. How many green marbles are there?

Answer 1

b + g = 24

g = 2b - 9

solve the system by substitution or elimination

Answer 2

A bag contains green marbles and blue marbles, 24 in total. The number of green marbles is 3 less than 2 times the number of blue marbles. How many green marbles are there?

Answer 3

A bag contains white marbles and yellow marbles, 24 in total. The number of white marbles is 9 less than 2 times the number of yellow marbles. How many white marbles are there?