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18 votes
Robert has a marble collection 1/7 of his marbles are blue 2/7 of his marbles are green. What fraction of Robert’s marbles are not blue or green?

1 Answer

9 votes

Answer:

4/7

Explanation:

1/7 + 2/7 = 3/7
7/7 - 3/7 = 4/7

User Callidior
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