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Mathematics, 02.08.2021 09:00 natjon528

The sum of first three terms of an arithmetic series is 21. If the sum of the first two terms is subtracted from the third term then it would be 9. find the three terms of the series. The first and last bra​

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The sum of first three terms of an arithmetic series is 21. If the sum of the first two terms is sub...

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