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Mathematics 11 Online
OpenStudy (anonymous):

Antonio has a total of 55 marbles. He has 15 green marbles and 12 red marbles. The rest of the marbles are blue. How many blue marbles does he have?

OpenStudy (anonymous):

55-15=40n 40-12=28 Antonio has a total of 28 blue marbles.

OpenStudy (anonymous):

thank you.

OpenStudy (anonymous):

no n in the 40.. I think that was from when my screen froze.

OpenStudy (anonymous):

ok.

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