s20068093 s20068093

01-05-2020
Mathematics

contestada

A bag contains blue marbles and red marbles, 21 in total. The number of blue marbles is 9 less than 2 times the number of red marbles. How many blue marbles are there?

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danigirl021813 danigirl021813

01-05-2020

Answer:

11 marbles

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