darmin0 darmin0

24-01-2022
Mathematics

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Helen has 21 marbles. 2/7 of them are blue,1/3 are red and the rest are green. how many green marbles does Helen have?

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giselehernandez68 giselehernandez68

24-01-2022

Answer:

8

Step-by-step explanation:

2/7 of 21 is 6 1/3 of 21 is 7. 6+7 is 13. 21-13 = 8

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