melissa0210 melissa0210

10-04-2024
Mathematics

contestada

1/2 of a number is added to 2/3 of the number is 21. find the number

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couchpatato1 couchpatato1

10-04-2024

18
1/2 of 18 is 9
2/3 of 18 is 12
12+9=21

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