Mathematics, 02.03.2020 21:13, GiuliAzevedo

A bag contains blue marbles and red marbles, 107 in total. The number of blue marbles is 7 more than 4 times the number of red marbles. How many blue marbles are there?

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A bag contains blue marbles and red marbles, 107 in total. The number of blue marbles is 7 more than...